CVE-2026-111891

phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via Group Permissions API

State: Published
Severity: 7.0 High
Published: Oct 17, 2026
Updated: Oct 19, 2026
Reserved: Oct 17, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N	VulnCheck

Weaknesses

CWE-269 Improper Privilege Management

Affected Products

Product	Versions
phpMyFAQthorsten	4.2.0-alpha.2 to before 4.2.0-betaAffected 4.2.0-betaNot affected

References

GitHub Security Advisory (GHSA-6vf7-mrj2-7c37)vendor-advisory
VulnCheck Advisory: phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via Group Permissions APIthird-party-advisory

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