Privilege escalation in Phpmyfaq
CVE-2026-57995
phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in GroupController::updatePermissions that allows GROUP_EDIT administrators to grant arbitrary rights to groups without verifying they hold those rights themselves. A delegated administrator can exploit this by assigning high-value permissions to a group they belong to, inheriting those rights and escalating privileges up to full administrative control.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Phpmyfaq — versions 0, 4.1.5
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pg62-f8g4-4wqh (vendor-advisory)
- www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-self-rig… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-57995?
- CVE-2026-57995 is a high-severity vulnerability in Phpmyfaq, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-06-30.
- How severe is CVE-2026-57995?
- High severity. CVSS v3 base score is 8.8 out of 10.