{"items":[{"id":"NVI-00006952","kind":"vulnerability","title":"HTML comments vulnerability allowing to execute JavaScript code","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7h26-63m7-qhf2","CVE-2021-41165"],"plain_summary":"OSV carries this publisher advisory for ckeditor4, ckeditor/ckeditor. 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 4.17.0 for ckeditor4. Confirm the publisher’s latest guidance.","source_ids":["sr-c8bff8399f4322c3d1af814922c46bb0"],"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 4.17.0 for ckeditor/ckeditor. Confirm the publisher’s latest guidance.","source_ids":["sr-c8bff8399f4322c3d1af814922c46bb0"],"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-c8bff8399f4322c3d1af814922c46bb0","url":"https://github.com/advisories/GHSA-7h26-63m7-qhf2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7h26-63m7-qhf2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.950Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-c8bff8399f4322c3d1af814922c46bb0"],"technology":"ckeditor4","known_exclusions":[],"conditions_summary":"### Affected packages\nThe vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4.\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed comments HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 4.17.0.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 4 team would like to thank William Bowling (wbowling) for recognizing and reporting this vulnerability.\n","public_affected_ranges":["SEMVER: introduced 0; fixed 4.17.0"]},{"certainty":"source_listed","source_ids":["sr-c8bff8399f4322c3d1af814922c46bb0"],"technology":"ckeditor/ckeditor","known_exclusions":[],"conditions_summary":"### Affected packages\nThe vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4.\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed comments HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 4.17.0.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 4 team would like to thank William Bowling (wbowling) for recognizing and reporting this vulnerability.\n","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.17.0"]}],"null_published_at":"2026-10-31T22:13:14.305Z","source_updated_at":"2026-07-08T06:28:44.197Z","source_disclosed_at":"2021-11-17T21:58:25.000Z","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":"2026-10-31T21:41:59.950Z"}],"next_cursor":null,"snapshot_revision":"42594"}