{"items":[{"id":"NVI-00006292","kind":"vulnerability","title":"Winter: Stored XSS through Editor Settings custom styles","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-vgp4-2fc4-qff2","CVE-2026-32258"],"plain_summary":"OSV carries this publisher advisory for winter/wn-backend-module. 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 1.2.13 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"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-95d5cc51e19a4be4ffbaabd9e92b140a"],"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":"2026-09-09T21:09:13.080Z","value":"8.1 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-d2fafee4e1031af07e09059a6e6b0233"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.382%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.32223. Missing scores are unknown.","source_id":"sr-95d5cc51e19a4be4ffbaabd9e92b140a"}],"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-aec6455b129a9b335813fae2641684d8","url":"https://github.com/advisories/GHSA-vgp4-2fc4-qff2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-vgp4-2fc4-qff2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.374Z"},{"id":"sr-d2fafee4e1031af07e09059a6e6b0233","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32258","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-32258","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:22:50.140Z"},{"id":"sr-95d5cc51e19a4be4ffbaabd9e92b140a","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-2026-32258","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.376Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact                                                                                                       \n                                                                                                                   \nAuthenticated Backend Users with the `backend.manage_editor` (\"Manage editor settings\") permission can provide custom styles through **Settings → Editor Settings → Markup Styles** that are compiled through the LESS CSS parser and rendered on every backend page. Previously, the compiled output was not sanitized, which could have allowed a stored XSS attack.\n\nAlthough this is a valid security issue, it's important to note that its severity is relatively low. To exploit the vulnerability, an attacker would already need to have trusted access to the Winter CMS backend with a specific administrative permission. The Winter CMS                maintainers recommend that the `backend.manage_editor` permission only be granted to trusted administrators and developers.\n\nA related issue exists in the custom CSS field at **Settings → Customize Backend → Styles** (`backend.manage_branding` permission), which uses the same rendering mechanism and is addressed separately.\n","public_affected_ranges":["ECOSYSTEM: introduced 1.2.10; fixed 1.2.13"]}],"null_published_at":"2026-11-07T22:29:23.444Z","source_updated_at":"2026-08-12T14:56:06.645Z","source_disclosed_at":"2026-08-12T14:40:38.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.374Z"},{"id":"NVI-00006292","kind":"vulnerability","title":"Winter: Stored XSS through Editor Settings custom styles","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vgp4-2fc4-qff2","CVE-2026-32258"],"plain_summary":"OSV carries this publisher advisory for winter/wn-backend-module. 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 1.2.13 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"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-95d5cc51e19a4be4ffbaabd9e92b140a"],"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":"0.382%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.32223. Missing scores are unknown.","source_id":"sr-95d5cc51e19a4be4ffbaabd9e92b140a"}],"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-aec6455b129a9b335813fae2641684d8","url":"https://github.com/advisories/GHSA-vgp4-2fc4-qff2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-vgp4-2fc4-qff2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.374Z"},{"id":"sr-95d5cc51e19a4be4ffbaabd9e92b140a","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-2026-32258","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.376Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact                                                                                                       \n                                                                                                                   \nAuthenticated Backend Users with the `backend.manage_editor` (\"Manage editor settings\") permission can provide custom styles through **Settings → Editor Settings → Markup Styles** that are compiled through the LESS CSS parser and rendered on every backend page. Previously, the compiled output was not sanitized, which could have allowed a stored XSS attack.\n\nAlthough this is a valid security issue, it's important to note that its severity is relatively low. To exploit the vulnerability, an attacker would already need to have trusted access to the Winter CMS backend with a specific administrative permission. The Winter CMS                maintainers recommend that the `backend.manage_editor` permission only be granted to trusted administrators and developers.\n\nA related issue exists in the custom CSS field at **Settings → Customize Backend → Styles** (`backend.manage_branding` permission), which uses the same rendering mechanism and is addressed separately.\n","public_affected_ranges":["ECOSYSTEM: introduced 1.2.10; fixed 1.2.13"]}],"null_published_at":"2026-11-04T02:53:03.150Z","source_updated_at":"2026-08-12T14:56:06.645Z","source_disclosed_at":"2026-08-12T14:40:38.000Z","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":"2026-10-31T21:42:41.374Z"},{"id":"NVI-00006292","kind":"vulnerability","title":"Winter: Stored XSS through Editor Settings custom styles","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vgp4-2fc4-qff2","CVE-2026-32258"],"plain_summary":"OSV carries this publisher advisory for winter/wn-backend-module. 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 1.2.13 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"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-aec6455b129a9b335813fae2641684d8","url":"https://github.com/advisories/GHSA-vgp4-2fc4-qff2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-vgp4-2fc4-qff2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.374Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-aec6455b129a9b335813fae2641684d8"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact                                                                                                       \n                                                                                                                   \nAuthenticated Backend Users with the `backend.manage_editor` (\"Manage editor settings\") permission can provide custom styles through **Settings → Editor Settings → Markup Styles** that are compiled through the LESS CSS parser and rendered on every backend page. Previously, the compiled output was not sanitized, which could have allowed a stored XSS attack.\n\nAlthough this is a valid security issue, it's important to note that its severity is relatively low. To exploit the vulnerability, an attacker would already need to have trusted access to the Winter CMS backend with a specific administrative permission. The Winter CMS                maintainers recommend that the `backend.manage_editor` permission only be granted to trusted administrators and developers.\n\nA related issue exists in the custom CSS field at **Settings → Customize Backend → Styles** (`backend.manage_branding` permission), which uses the same rendering mechanism and is addressed separately.\n","public_affected_ranges":["ECOSYSTEM: introduced 1.2.10; fixed 1.2.13"]}],"null_published_at":"2026-10-31T22:13:10.048Z","source_updated_at":"2026-08-12T14:56:06.645Z","source_disclosed_at":"2026-08-12T14:40:38.000Z","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":"2026-10-31T21:42:41.374Z"}],"next_cursor":null,"snapshot_revision":"42594"}