{"id":"CVE-2026-111893","kind":"vulnerability","aliases":["CVE-2026-111893"],"related":[],"title":"phpMyFAQ: category-restricted admins can grant themselves unrestricted category access","description":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains a privilege escalation vulnerability in GroupController::saveCategoryRestrictions() that lets delegated administrators assign categories outside their own scope. Category-restricted administrators can POST to /admin/api/group/category-restrictions with out-of-scope or empty categoryIds to grant groups unrestricted category access.","summary":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta lets delegated administrators assign categories outside their own scope through the group category restrictions endpoint. A restricted admin can post out-of-scope or empty category IDs to grant groups unrestricted access to categories they should not control.","severity":"high","cvss":8.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","php","phpmyfaq","self-hosted"],"not_affected_if":["default-config","no-delegated-admins"],"how_to_check":"- Check the installed version in the phpMyFAQ admin panel or in the release files; versions `4.2.0-alpha` up to but not including `4.2.0-beta` are affected.\n- Review whether any delegated administrators are restricted to categories, since only they can use this path.","fix":"- Upgrade phpMyFAQ to `4.2.0-beta` or later.\n- Until upgraded, review group category restrictions and remove delegated admin rights that are not needed.","status":"open","published_at":"2026-10-17T19:16:30+00:00","first_seen_at":"2026-10-23T21:57:14+00:00","triaged_at":"2026-10-25T03:00:36+00:00","updated_at":"2026-10-25T03:00:36+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T03:00:36Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade phpMyFAQ to `4.2.0-beta` or later.\n- Until upgraded, review group category restrictions and remove delegated admin rights that are not needed.","reach":"internet","title":"phpMyFAQ: category-restricted admins can grant themselves unrestricted category access","impact":"medium","summary":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta lets delegated administrators assign categories outside their own scope through the group category restrictions endpoint. A restricted admin can post out-of-scope or empty category IDs to grant groups unrestricted access to categories they should not control.","category":"package","nicknames":[],"who_cares":["phpmyfaq","php","self-hosted"],"confidence":0.7,"needs_auth":"yes","worst_case":"A restricted admin grants their groups access to categories outside their scope.","analyst_note":"","how_to_check":"- Check the installed version in the phpMyFAQ admin panel or in the release files; versions `4.2.0-alpha` up to but not including `4.2.0-beta` are affected.\n- Review whether any delegated administrators are restricted to categories, since only they can use this path.","needs_analyst":false,"not_affected_if":["default-config","no-delegated-admins"],"who_is_affected":"Installations running phpMyFAQ 4.2.0-alpha before 4.2.0-beta that use delegated, category-restricted administrator accounts. Installations without delegated category-restricted admins have a much smaller exposure, and sites on later versions are not affected.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.000622,"input_tokens":3358,"output_tokens":573,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-111893':14A,17A '-2026':13A,16A '/admin/api/group/category-restrictions':100C '4.2.0':25B,28B,70C,73C 'access':11A,62B,114C 'admin':5A,47B 'administr':32B,86C,96C 'alpha':26B,71C 'assign':33B,87C 'beta':29B,74C 'categori':3A,10A,34B,42B,56B,64B,88C,94C,113C 'category-restrict':2A,93C 'categoryid':108C 'contain':75C 'control':68B 'cve':12A,15A 'deleg':31B,85C 'empti':55B,107C 'endpoint':44B 'escal':78C 'grant':7A,59B,110C 'group':41B,60B,111C 'groupcontrol':81C 'host':23B 'id':57B 'let':30B,84C 'out-of-scop':50B,102C 'outsid':35B,89C 'packag':18B 'php':19B 'phpmyfaq':1A,20B,24B,69C 'post':49B,98C 'privileg':77C 'restrict':4A,43B,46B,95C 'savecategoryrestrict':82C 'scope':38B,53B,92C,105C 'self':22B 'self-host':21B 'unrestrict':9A,61B,112C 'vulner':79C","nicknames":[],"mitigations":[],"who_affected":"Installations running phpMyFAQ 4.2.0-alpha before 4.2.0-beta that use delegated, category-restricted administrator accounts. Installations without delegated category-restricted admins have a much smaller exposure, and sites on later versions are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-17T19:16:30+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-111893","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111893","severity":null,"published_at":"2026-10-17T19:16:30+00:00","modified_at":"2026-10-18T12:17:10+00:00","first_seen_at":"2026-10-23T21:57:14+00:00","fetched_at":"2026-10-23T22:28:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}