{"items":[{"id":"NVI-00002452","kind":"vulnerability","title":"TinyMCE mXSS vulnerability in undo/redo, getContent API, resetContent API, and Autosave plugin","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-v65r-p3vv-jjfv","CVE-2023-45818"],"plain_summary":"OSV carries this publisher advisory for tinymce, TinyMCE, tinymce/tinymce, tinymce, TinyMCE. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-a5080554e03e191408fa79e2ae9b7ac1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T06:29:35.170Z","value":"6.1 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-9bf84ea27021492bb8dcbe45a3175bab"},{"kind":"CVSS","as_of":"2026-06-17T06:29:35.170Z","value":"6.1 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-9bf84ea27021492bb8dcbe45a3175bab"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.759%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.55289. Missing scores are unknown.","source_id":"sr-a5080554e03e191408fa79e2ae9b7ac1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-18d82464835621a5d7fd1512817e1c0d","url":"https://github.com/advisories/GHSA-v65r-p3vv-jjfv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-v65r-p3vv-jjfv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.371Z"},{"id":"sr-9bf84ea27021492bb8dcbe45a3175bab","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45818","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2023-45818","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T00:58:51.607Z"},{"id":"sr-a5080554e03e191408fa79e2ae9b7ac1","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2023-45818","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]}],"null_published_at":"2026-11-06T15:18:11.511Z","source_updated_at":"2026-09-10T03:49:25.360Z","source_disclosed_at":"2023-10-19T16:36:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.371Z"},{"id":"NVI-00002452","kind":"vulnerability","title":"TinyMCE mXSS vulnerability in undo/redo, getContent API, resetContent API, and Autosave plugin","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-v65r-p3vv-jjfv","CVE-2023-45818"],"plain_summary":"OSV carries this publisher advisory for tinymce, TinyMCE, tinymce/tinymce, tinymce, TinyMCE. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-a5080554e03e191408fa79e2ae9b7ac1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.759%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.55289. Missing scores are unknown.","source_id":"sr-a5080554e03e191408fa79e2ae9b7ac1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-18d82464835621a5d7fd1512817e1c0d","url":"https://github.com/advisories/GHSA-v65r-p3vv-jjfv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-v65r-p3vv-jjfv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.371Z"},{"id":"sr-a5080554e03e191408fa79e2ae9b7ac1","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2023-45818","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]}],"null_published_at":"2026-11-04T02:53:03.187Z","source_updated_at":"2026-09-10T03:49:25.360Z","source_disclosed_at":"2023-10-19T16:36:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:41.371Z"},{"id":"NVI-00002452","kind":"vulnerability","title":"TinyMCE mXSS vulnerability in undo/redo, getContent API, resetContent API, and Autosave plugin","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-v65r-p3vv-jjfv","CVE-2023-45818"],"plain_summary":"OSV carries this publisher advisory for tinymce, TinyMCE, tinymce/tinymce, tinymce, TinyMCE. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 6.7.1 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.10.8 for tinymce/tinymce. Confirm the publisher’s latest guidance.","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-18d82464835621a5d7fd1512817e1c0d","url":"https://github.com/advisories/GHSA-v65r-p3vv-jjfv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-v65r-p3vv-jjfv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.371Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 6.0.0; fixed 6.7.1"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["SEMVER: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"TinyMCE","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]},{"certainty":"source_listed","source_ids":["sr-18d82464835621a5d7fd1512817e1c0d"],"technology":"tinymce/tinymce","known_exclusions":[],"conditions_summary":"### Impact\nA mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native DOMParser API (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed.\n​This vulnerability also impacts these related TinyMCE APIs and plugins:​\n* `tinymce.Editor.getContent({ format: 'raw' })`\n* `tinymce.Editor.resetContent()`\n* [Autosave Plugin](https://tiny.cloud/docs/tinymce/6/autos","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.10.8"]}],"null_published_at":"2026-10-31T22:00:33.891Z","source_updated_at":"2026-09-10T03:49:25.360Z","source_disclosed_at":"2023-10-19T16:36:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:41.371Z"}],"next_cursor":null,"snapshot_revision":"42594"}