CVE-2026-85593
phpMyFAQ before 4.1.8 Stored XSS via html_entity_decode
- State
- Published
- Severity
- 5.1 Medium
- Published
- Sep 4, 2026
- Updated
- Sep 14, 2026
- Reserved
- Sep 4, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | 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 | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
phpMyFAQthorsten |
|
References
- GitHub Security Advisory (GHSA-x6qj-5jhf-xgpm)vendor-advisory
- VulnCheck Advisory: phpMyFAQ before 4.1.8 Stored XSS via html_entity_decodethird-party-advisory
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