{"id":"CVE-2026-63178","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63178","generatedAt":"2026-10-28T02:13:27.341Z","title":"Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py call update_user_group and add_users_to_user_group in…","description":"Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py call update_user_group and add_users_to_user_group in ee/onyx/db/user_group.py without enforcing _validate_curator_can_modify_group, allowing a curator to add accounts to arbitrary groups and obtain document access through get_acl_for_user and the OpenSearch access_control_list filter. This issue is fixed in version 4.3.0.","published":"2026-08-17T22:17:16.000Z","lastModified":"2026-10-23T16:10:00.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-639"],"affected":[],"epss":{"score":0.00516,"percentile":0.43657,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.52%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/onyx-dot-app/onyx/commit/46e19cc2750fed659488cb12a1f171016ba5a099","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/commit/b9e1c6894be3c237283f4b5fd4eb0af935b40664","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/pull/12525","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/pull/12549","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/releases/tag/v4.3.0","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m","source":"security-advisories@github.com"},{"url":"https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63178","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}