{"items":[{"id":"NVI-00008282","kind":"vulnerability","title":"October CMS stored XSS by authenticated backend user with improper configuration","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-rvx8-p3xp-fj3p","CVE-2023-44383"],"plain_summary":"OSV carries this publisher advisory for october/system. 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 3.5.2 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"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-190948499f9967e1b87d7fb601b080d9"],"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":"2026-11-04T12:03:12.000Z","value":"0.410%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35391. Missing scores are unknown.","source_id":"sr-190948499f9967e1b87d7fb601b080d9"}],"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-fd102ba2d3d4732a4c23a52378c66abe","url":"https://github.com/advisories/GHSA-rvx8-p3xp-fj3p","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-rvx8-p3xp-fj3p","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.367Z"},{"id":"sr-190948499f9967e1b87d7fb601b080d9","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-2023-44383","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:57:29.219Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"technology":"october/system","known_exclusions":[],"conditions_summary":"### Impact\n\nA user with access to the media manager that stores SVG files could create a stored XSS attack against themselves and any other user with access to the media manager when SVG files are supported.\n\nSVG files are supported by default in v3 for convenience; however, this has resulted in multiple mistaken vulnerability reports from security researchers. As per the documentation, if a backend user is not trusted, the advice is to remove the `svg` extension from the list of supported file types.\n\n### Patches\n\nThe issue has been patched in v3.5.2 by including an SVG sanister. It is enabled by default for new installations but must be enabled for existing sites in the **config/media.php** file.\n\n```\n'clean_vectors' => true,\n```\n\n### Workarounds\n\nIf you cannot upgrade for this patch, follow the pervious advice and remove `svg` from the supported file types.\n\n### References\n\n- https://github.com/octobercms/october/blob/3.x/config/media.php\n\nCredits to:\n- Faris Krivic\n- Okan Kurtulus\n- Aldin Visnjic\n- Bug Shankar\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.5.2"]}],"null_published_at":"2026-11-08T19:53:38.945Z","source_updated_at":"2026-09-10T03:49:59.128Z","source_disclosed_at":"2023-11-29T21:45:31.000Z","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":"2026-10-31T21:42:41.367Z"},{"id":"NVI-00008282","kind":"vulnerability","title":"October CMS stored XSS by authenticated backend user with improper configuration","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-rvx8-p3xp-fj3p","CVE-2023-44383"],"plain_summary":"OSV carries this publisher advisory for october/system. 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 3.5.2 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"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-4a5e257f1d51d679e816d9dc8ac27e88"],"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":"0.410%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35244. Missing scores are unknown.","source_id":"sr-4a5e257f1d51d679e816d9dc8ac27e88"}],"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-fd102ba2d3d4732a4c23a52378c66abe","url":"https://github.com/advisories/GHSA-rvx8-p3xp-fj3p","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-rvx8-p3xp-fj3p","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.367Z"},{"id":"sr-4a5e257f1d51d679e816d9dc8ac27e88","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-2023-44383","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"technology":"october/system","known_exclusions":[],"conditions_summary":"### Impact\n\nA user with access to the media manager that stores SVG files could create a stored XSS attack against themselves and any other user with access to the media manager when SVG files are supported.\n\nSVG files are supported by default in v3 for convenience; however, this has resulted in multiple mistaken vulnerability reports from security researchers. As per the documentation, if a backend user is not trusted, the advice is to remove the `svg` extension from the list of supported file types.\n\n### Patches\n\nThe issue has been patched in v3.5.2 by including an SVG sanister. It is enabled by default for new installations but must be enabled for existing sites in the **config/media.php** file.\n\n```\n'clean_vectors' => true,\n```\n\n### Workarounds\n\nIf you cannot upgrade for this patch, follow the pervious advice and remove `svg` from the supported file types.\n\n### References\n\n- https://github.com/octobercms/october/blob/3.x/config/media.php\n\nCredits to:\n- Faris Krivic\n- Okan Kurtulus\n- Aldin Visnjic\n- Bug Shankar\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.5.2"]}],"null_published_at":"2026-10-31T23:18:17.265Z","source_updated_at":"2026-09-10T03:49:59.128Z","source_disclosed_at":"2023-11-29T21:45:31.000Z","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":"2026-10-31T21:42:41.367Z"},{"id":"NVI-00008282","kind":"vulnerability","title":"October CMS stored XSS by authenticated backend user with improper configuration","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-rvx8-p3xp-fj3p","CVE-2023-44383"],"plain_summary":"OSV carries this publisher advisory for october/system. 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 3.5.2 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"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-fd102ba2d3d4732a4c23a52378c66abe","url":"https://github.com/advisories/GHSA-rvx8-p3xp-fj3p","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-rvx8-p3xp-fj3p","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.367Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd102ba2d3d4732a4c23a52378c66abe"],"technology":"october/system","known_exclusions":[],"conditions_summary":"### Impact\n\nA user with access to the media manager that stores SVG files could create a stored XSS attack against themselves and any other user with access to the media manager when SVG files are supported.\n\nSVG files are supported by default in v3 for convenience; however, this has resulted in multiple mistaken vulnerability reports from security researchers. As per the documentation, if a backend user is not trusted, the advice is to remove the `svg` extension from the list of supported file types.\n\n### Patches\n\nThe issue has been patched in v3.5.2 by including an SVG sanister. It is enabled by default for new installations but must be enabled for existing sites in the **config/media.php** file.\n\n```\n'clean_vectors' => true,\n```\n\n### Workarounds\n\nIf you cannot upgrade for this patch, follow the pervious advice and remove `svg` from the supported file types.\n\n### References\n\n- https://github.com/octobercms/october/blob/3.x/config/media.php\n\nCredits to:\n- Faris Krivic\n- Okan Kurtulus\n- Aldin Visnjic\n- Bug Shankar\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.5.2"]}],"null_published_at":"2026-10-31T22:13:22.837Z","source_updated_at":"2026-09-10T03:49:59.128Z","source_disclosed_at":"2023-11-29T21:45:31.000Z","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":"2026-10-31T21:42:41.367Z"}],"next_cursor":null,"snapshot_revision":"42594"}