CVE-2026-111891 phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via Group Permissions API
Administrators with limited group edit rights can escalate privileges to gain unrestricted FAQ access across all languages and categories.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111891?
CVE-2026-111891 is a high-severity vulnerability in thorsten phpMyFAQ, published on 17 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-111891?
How do I fix CVE-2026-111891?
No fix has been published for CVE-2026-111891 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111891 being exploited?
There is no known exploitation of CVE-2026-111891 in the wild and no public exploit code.
Sources
Also known as GHSA-6vf7-mrj2-7c37, GHSA-vj43-979m-cpx8.