{"id":"CVE-2026-111891","summary":"phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via Group Permissions API","details":"phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in the group permission API, whose updatePermissions and updateMembers endpoints check held rights without regard to language or category scope and write unrestricted group grants. Non-superadmin administrators holding GROUP_EDIT can grant a group a right they hold only in a narrow scope and self-join it via updateMembers, gaining unrestricted FAQ create, edit, and publish access across all languages and categories.","aliases":["GHSA-6vf7-mrj2-7c37"],"modified":"2026-10-20T02:30:19.663597411Z","published":"2026-10-17T18:46:15.227Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111891.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-269"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111891.json"},{"type":"ADVISORY","url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6vf7-mrj2-7c37"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111891"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/phpmyfaq-from-4.2.0-alpha.2-before-4.2.0-beta-privilege-escalation-via-group-permissions-api"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/thorsten/phpmyfaq","events":[{"introduced":"7a9aea18c10c1ff245a8f833e09af2c494403c05"},{"fixed":"e137c1e017b15ffa01181a2380b81e1aea5ae1ad"}],"database_specific":{"extracted_events":[{"introduced":"4.2.0-alpha.2"},{"fixed":"4.2.0-beta"}],"source":"AFFECTED_FIELD"}}],"versions":["development-nightly-2026-10-03","4.1-nightly-2026-10-03","development-nightly-2026-10-02","4.1-nightly-2026-10-02","development-nightly-2026-10-01","development-nightly-2026-09-30","4.1-nightly-2026-10-01","4.1-nightly-2026-09-30","development-nightly-2026-09-29","4.1-nightly-2026-09-29","development-nightly-2026-09-28","4.1-nightly-2026-09-28","development-nightly-2026-09-27","development-nightly-2026-09-26","development-nightly-2026-09-25","4.1-nightly-2026-09-27","4.1-nightly-2026-09-26","4.1-nightly-2026-09-25","development-nightly-2026-09-24","4.1-nightly-2026-09-24","development-nightly-2026-09-23","4.1-nightly-2026-09-23","development-nightly-2026-09-22","4.1-nightly-2026-09-22","development-nightly-2026-09-21","4.1-nightly-2026-09-21","development-nightly-2026-09-20","4.1-nightly-2026-09-20","4.1-nightly-2026-09-18","development-nightly-2026-09-17","4.1-nightly-2026-09-17","development-nightly-2026-09-16","4.1-nightly-2026-09-16","development-nightly-2026-09-15","4.1-nightly-2026-09-15","development-nightly-2026-09-14","4.1-nightly-2026-09-14","development-nightly-2026-09-13","4.1-nightly-2026-09-13","development-nightly-2026-09-12","4.1-nightly-2026-09-12","development-nightly-2026-09-11","4.1-nightly-2026-09-11","development-nightly-2026-09-10","development-nightly-2026-09-09","development-nightly-2026-09-08","development-nightly-2026-09-07","development-nightly-2026-09-06","development-nightly-2026-09-05","development-nightly-2026-09-04","development-nightly-2026-09-03","development-nightly-2026-09-02","development-nightly-2026-09-01","4.1-nightly-2026-09-10","4.1-nightly-2026-09-09","4.1-nightly-2026-09-08","4.1-nightly-2026-09-07","4.1-nightly-2026-09-06","4.1-nightly-2026-09-05","4.1-nightly-2026-09-04","4.1-nightly-2026-09-03","4.1-nightly-2026-09-02","4.1-nightly-2026-09-01","development-nightly-2026-08-31","development-nightly-2026-08-30","development-nightly-2026-08-29","development-nightly-2026-08-28","development-nightly-2026-08-27","development-nightly-2026-08-26","development-nightly-2026-08-25","development-nightly-2026-08-24","4.1-nightly-2026-08-31","4.1-nightly-2026-08-30","4.1-nightly-2026-08-29","4.1-nightly-2026-08-28","4.1-nightly-2026-08-27","4.1-nightly-2026-08-26","4.1-nightly-2026-08-25","4.1-nightly-2026-08-24","development-nightly-2026-08-21","4.1-nightly-2026-08-21","4.2.0-alpha.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111891.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"}]}