{"items":[{"id":"NVI-00007758","kind":"vulnerability","title":"Grav CMS vulnerable to stored XSS via Markdown media attribute() action","revision":4,"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-r7fx-8g49-7hhr","CVE-2026-42841"],"plain_summary":"GitHub lists this reviewed advisory for getgrav/grav. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4dee0fb1d2be1ba1192b9d9773ab2354"],"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},{"summary":"The original advisory lists fixed boundaries 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"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":[{"kind":"CVSS","as_of":"2026-05-13T13:52:11.000Z","value":"4.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2e16d29d8fd6ab663d06b479975682d4"},{"kind":"CVSS","as_of":"2026-10-26T18:10:00.173Z","value":"4.8 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-10574683f529b56cb04e368b5bdcf76a"},{"kind":"CVSS","as_of":"2026-10-26T18:10:00.173Z","value":"6.9 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-10574683f529b56cb04e368b5bdcf76a"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.420%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36394. Missing scores are unknown.","source_id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354"}],"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-2e16d29d8fd6ab663d06b479975682d4","url":"https://github.com/advisories/GHSA-r7fx-8g49-7hhr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fx-8g49-7hhr","publisher":"GitHub Advisory Database","observed_at":"2026-11-08T15:08:00.152Z"},{"id":"sr-e7cdbade81225b207dcf3964448a6785","url":"https://github.com/advisories/GHSA-r7fx-8g49-7hhr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r7fx-8g49-7hhr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.358Z"},{"id":"sr-10574683f529b56cb04e368b5bdcf76a","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42841","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-42841","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T22:35:12.981Z"},{"id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354","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-2026-42841","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2e16d29d8fd6ab663d06b479975682d4"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nAn authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax.\n\nThe issue is caused by Markdown image query parameters being converted into callable media actions. The public `attribute()` media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element.\n\nFor example, this Markdown:\n\n```markdown\n!Quarterly market overview)\n```\n\nis rendered as an image tag containing an executable `onload` handler:\n\n```html\n\n```\n\nThis results in stored XSS when another user views the affected page. In a multi-user Grav installation, a lower-privileged page editor could use this to target administrators or reviewers who preview or view editor-controlled content.\n\nTested versions:\n\n- Grav CMS: 1.7.49.5\n- Admin Plugin: 1.10.49.1\n\nSuggested classification:\n\n- CWE-79: Improper Neutralization of Input During Web Page Gene","public_affected_ranges":["< 2.0.0-beta.2"]},{"certainty":"source_listed","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nAn authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax.\n\nThe issue is caused by Markdown image query parameters being converted into callable media actions. The public `attribute()` media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element.\n\nFor example, this Markdown:\n\n```markdown\n!Quarterly market overview)\n```\n\nis rendered as an image tag containing an executable `onload` handler:\n\n```html\n\n```\n\nThis results in stored XSS when another user views the affected page. In a multi-user Grav installation, a lower-privileged page editor could use this to target administrators or reviewers who preview or view editor-controlled content.\n\nTested versions:\n\n- Grav CMS: 1.7.49.5\n- Admin Plugin: 1.10.49.1\n\nSuggested classification:\n\n- CWE-79: Improper Neutralization of Input During Web Page Gene","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-08T15:11:47.470Z","source_updated_at":"2026-05-13T13:52:11.000Z","source_disclosed_at":"2026-05-05T21:24:08.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.358Z"},{"id":"NVI-00007758","kind":"vulnerability","title":"Grav CMS vulnerable to stored XSS via Markdown media attribute() action","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-r7fx-8g49-7hhr","CVE-2026-42841"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"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-4dee0fb1d2be1ba1192b9d9773ab2354"],"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":"2026-10-26T18:10:00.173Z","value":"4.8 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-10574683f529b56cb04e368b5bdcf76a"},{"kind":"CVSS","as_of":"2026-10-26T18:10:00.173Z","value":"6.9 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-10574683f529b56cb04e368b5bdcf76a"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.420%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36394. Missing scores are unknown.","source_id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354"}],"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-e7cdbade81225b207dcf3964448a6785","url":"https://github.com/advisories/GHSA-r7fx-8g49-7hhr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r7fx-8g49-7hhr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.358Z"},{"id":"sr-10574683f529b56cb04e368b5bdcf76a","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42841","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-42841","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T22:35:12.981Z"},{"id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354","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-2026-42841","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nAn authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax.\n\nThe issue is caused by Markdown image query parameters being converted into callable media actions. The public `attribute()` media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element.\n\nFor example, this Markdown:\n\n```markdown\n!Quarterly market overview)\n```\n\nis rendered as an image tag containing an executable `onload` handler:\n\n```html\n\n```\n\nThis results in stored XSS when another user views the affected page. In a multi-user Grav installation, a lower-privileged page editor could use this to target administrators or reviewers who preview or view editor-controlled content.\n\nTested versions:\n\n- Grav CMS: 1.7.49.5\n- Admin Plugin: 1.10.49.1\n\nSuggested classification:\n\n- CWE-79: Improper Neutralization of Input During Web Page Gene","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-04T10:04:35.905Z","source_updated_at":"2026-09-10T03:50:47.418Z","source_disclosed_at":"2026-05-05T21:24:08.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.358Z"},{"id":"NVI-00007758","kind":"vulnerability","title":"Grav CMS vulnerable to stored XSS via Markdown media attribute() action","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fx-8g49-7hhr","CVE-2026-42841"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"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-4dee0fb1d2be1ba1192b9d9773ab2354"],"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":"0.420%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36394. Missing scores are unknown.","source_id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354"}],"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-e7cdbade81225b207dcf3964448a6785","url":"https://github.com/advisories/GHSA-r7fx-8g49-7hhr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r7fx-8g49-7hhr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.358Z"},{"id":"sr-4dee0fb1d2be1ba1192b9d9773ab2354","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-2026-42841","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nAn authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax.\n\nThe issue is caused by Markdown image query parameters being converted into callable media actions. The public `attribute()` media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element.\n\nFor example, this Markdown:\n\n```markdown\n!Quarterly market overview)\n```\n\nis rendered as an image tag containing an executable `onload` handler:\n\n```html\n\n```\n\nThis results in stored XSS when another user views the affected page. In a multi-user Grav installation, a lower-privileged page editor could use this to target administrators or reviewers who preview or view editor-controlled content.\n\nTested versions:\n\n- Grav CMS: 1.7.49.5\n- Admin Plugin: 1.10.49.1\n\nSuggested classification:\n\n- CWE-79: Improper Neutralization of Input During Web Page Gene","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-10-31T23:18:17.282Z","source_updated_at":"2026-09-10T03:50:47.418Z","source_disclosed_at":"2026-05-05T21:24:08.000Z","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":"2026-10-31T21:42:41.358Z"},{"id":"NVI-00007758","kind":"vulnerability","title":"Grav CMS vulnerable to stored XSS via Markdown media attribute() action","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fx-8g49-7hhr","CVE-2026-42841"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"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-e7cdbade81225b207dcf3964448a6785","url":"https://github.com/advisories/GHSA-r7fx-8g49-7hhr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r7fx-8g49-7hhr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.358Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e7cdbade81225b207dcf3964448a6785"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nAn authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax.\n\nThe issue is caused by Markdown image query parameters being converted into callable media actions. The public `attribute()` media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element.\n\nFor example, this Markdown:\n\n```markdown\n!Quarterly market overview)\n```\n\nis rendered as an image tag containing an executable `onload` handler:\n\n```html\n\n```\n\nThis results in stored XSS when another user views the affected page. In a multi-user Grav installation, a lower-privileged page editor could use this to target administrators or reviewers who preview or view editor-controlled content.\n\nTested versions:\n\n- Grav CMS: 1.7.49.5\n- Admin Plugin: 1.10.49.1\n\nSuggested classification:\n\n- CWE-79: Improper Neutralization of Input During Web Page Gene","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-10-31T22:13:18.633Z","source_updated_at":"2026-09-10T03:50:47.418Z","source_disclosed_at":"2026-05-05T21:24:08.000Z","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":"2026-10-31T21:42:41.358Z"}],"next_cursor":null,"snapshot_revision":"42594"}