# CVE-2026-85593

## Summary

- **CVE ID:** CVE-2026-85593
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)
- **CWE:** CWE-79
- **Published:** Sep 4, 2026
- **Last Modified:** Sep 14, 2026

## 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

- thorsten — phpMyFAQ (0)
- thorsten — phpMyFAQ (4.1.8)

## References

- [CNA](https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-x6qj-5jhf-xgpm)
- [CNA](https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-stored-xss-via-html-entity-decode)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-20._