{"id":"CVE-2026-111885","kind":"vulnerability","aliases":["CVE-2026-111885"],"related":[],"title":"phpMyFAQ: admins can delete higher-privileged groups via crafted request","description":"phpMyFAQ from 4.2.0-alpha before 4.2.0-beta contains a missing authorization vulnerability in GroupController::deleteGroup() that omits privilege-level checks on target groups. Authenticated non-SuperAdmin administrators holding GROUP_DELETE can send a crafted groupId to /admin/api/group/delete to permanently destroy higher-privileged groups and strip members' inherited rights.","summary":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta lets an authenticated administrator with the GROUP_DELETE right delete groups above their privilege level by sending a crafted groupId to the group delete endpoint. Deleting those groups permanently removes them and strips inherited rights from their members.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["php","phpmyfaq","runtime","self-hosted"],"not_affected_if":["default-config","no-delegated-group-admins"],"how_to_check":"- Check the installed version of phpMyFAQ in the application's version file or admin footer, and see whether it is between `4.2.0-alpha` and `4.2.0-beta`.\n- Review which administrator accounts hold the GROUP_DELETE right.","fix":"- Upgrade phpMyFAQ to `4.2.0-beta` or later.","status":"open","published_at":"2026-10-17T19:16:29+00:00","first_seen_at":"2026-10-23T21:57:14+00:00","triaged_at":"2026-10-25T03:38:27+00:00","updated_at":"2026-10-25T03:38:27+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-25T03:38:27Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade phpMyFAQ to `4.2.0-beta` or later.","reach":"internet","title":"phpMyFAQ: admins can delete higher-privileged groups via crafted request","impact":"medium","summary":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta lets an authenticated administrator with the GROUP_DELETE right delete groups above their privilege level by sending a crafted groupId to the group delete endpoint. Deleting those groups permanently removes them and strips inherited rights from their members.","category":"runtime","nicknames":[],"who_cares":["phpmyfaq","self-hosted","php"],"confidence":0.7,"needs_auth":"yes","worst_case":"Higher-privileged groups are permanently deleted and members lose inherited rights","analyst_note":"","how_to_check":"- Check the installed version of phpMyFAQ in the application's version file or admin footer, and see whether it is between `4.2.0-alpha` and `4.2.0-beta`.\n- Review which administrator accounts hold the GROUP_DELETE right.","needs_analyst":false,"not_affected_if":["default-config","no-delegated-group-admins"],"who_is_affected":"Installations of phpMyFAQ from 4.2.0-alpha up to but not including 4.2.0-beta are affected. The attacker needs an admin account that holds the GROUP_DELETE right but is not SuperAdmin, so instances with only SuperAdmin accounts or no delegated group-delete rights carry much less risk.","user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00062,"input_tokens":3367,"output_tokens":567,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-111885':14A,17A '-2026':13A,16A '/admin/api/group/delete':106C '4.2.0':25B,28B,70C,73C 'admin':2A 'administr':33B,96C 'alpha':26B,71C 'authent':32B,92C 'author':78C 'beta':29B,74C 'check':88C 'contain':75C 'craft':10A,48B,103C 'cve':12A,15A 'delet':4A,37B,39B,53B,55B,99C 'deletegroup':82C 'destroy':109C 'endpoint':54B 'group':8A,36B,40B,52B,57B,91C,98C,113C 'groupcontrol':81C 'groupid':49B,104C 'higher':6A,111C 'higher-privileg':5A,110C 'hold':97C 'host':23B 'inherit':63B,117C 'let':30B 'level':44B,87C 'member':67B,116C 'miss':77C 'non':94C 'non-superadmin':93C 'omit':84C 'perman':58B,108C 'php':18B 'phpmyfaq':1A,19B,24B,68C 'privileg':7A,43B,86C,112C 'privilege-level':85C 'remov':59B 'request':11A 'right':38B,64B,118C 'runtim':20B 'self':22B 'self-host':21B 'send':46B,101C 'strip':62B,115C 'superadmin':95C 'target':90C 'via':9A 'vulner':79C","nicknames":[],"mitigations":[],"who_affected":"Installations of phpMyFAQ from 4.2.0-alpha up to but not including 4.2.0-beta are affected. The attacker needs an admin account that holds the GROUP_DELETE right but is not SuperAdmin, so instances with only SuperAdmin accounts or no delegated group-delete rights carry much less risk.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-17T19:16:29+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/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-2026-111885","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111885","severity":null,"published_at":"2026-10-17T19:16:29+00:00","modified_at":"2026-10-18T14:16:54+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"}