Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck

CVE-2026-85593phpMyFAQ before 4.1.8 Stored XSS via html_entity_decode

Medium 5.4

In plain English

A medium-severity cross-site scripting in phpMyFAQ from thorsten. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 85.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

phpMyFAQ versions before 4.1.8 contain a stored cross-site scripting vulnerability in FaqHelper::convertOldInternalLinks() that calls html_entity_decode() on sanitized FAQ content, reversing entity-encoding protection. Authenticated users with FAQ editing privileges can inject JavaScript payloads that execute in the browsers of all users viewing the affected FAQ pages.

Affected products (as reported)

Vendor	Product	Versions
thorsten	phpMyFAQ	0 – before 4.1.8

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-x6qj-5jhf-xgpm) vendor-advisory
VulnCheck Advisory: phpMyFAQ before 4.1.8 Stored XSS via html_entity_decode third-party-advisory