What is CVE-2026-111890?

CVE-2026-111890 is a medium-severity vulnerability in Thorsten Phpmyfaq, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2026-10-17.

How severe is CVE-2026-111890?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Privilege escalation in Thorsten Phpmyfaq

CVE-2026-111890

phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in UserController::updateUserRights that drops per-right language restrictions when rights are re-granted. Administrators holding USER_EDIT can submit language-scoped rights to the update-rights API, including for themselves, to gain unrestricted FAQ create, edit, and publish access across all languages.

Vulnerability class: Privilege Escalation

Published 2026-10-17 · last modified 2026-10-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Thorsten Phpmyfaq

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

github.com/thorsten/phpMyFAQ/security/advisories/GHSA-3666-fmjj-qm5h (vendor-advisory)
www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha.2-before-4.2.0-beta-privilege… (third-party-advisory)

Frequently asked questions

What is CVE-2026-111890?: CVE-2026-111890 is a medium-severity vulnerability in Thorsten Phpmyfaq, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2026-10-17.
How severe is CVE-2026-111890?: Medium severity. CVSS v3 base score is 5.5 out of 10.