CVE-2026-46360 Details
Description
phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in SvgSanitizer::decodeAllEntities() that limits recursive entity decoding to 5 iterations, allowing attackers to bypass sanitization. Authenticated users with FAQ_EDIT permission can upload malicious SVG files with deeply nested ampersand encoding around numeric HTML entities to reconstruct javascript: URLs, which execute arbitrary JavaScript when clicked by other users viewing the uploaded SVG.
A stored cross-site scripting vulnerability has been identified in phpMyFAQ versions prior to 4.1.2. The issue arises in the SvgSanitizer's decodeAllEntities() method, which restricts recursive entity decoding to five iterations. This limitation allows authenticated users with FAQ_EDIT permission to upload malicious SVG files. By deeply nesting ampersand encodings around numeric HTML entities, attackers can bypass the sanitization process and create 'javascript:' URLs that execute arbitrary JavaScript when clicked by other users viewing the uploaded SVG.
Users are advised to update phpMyFAQ to version 4.1.2 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 15, 2026CISA-ADP
Assessed May 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-whqh-9pq5-c7r3 | CISA-ADP | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-whqh-9pq5-c7r3 | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/phpmyfaq-stored-xss-via-entity-decoding-depth-limit-bypass-in-svg-sanitizer | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| phpMyFAQ | <= 4.1.1 (semver) |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 28, 2026 | CVE Modified | [email protected] |
| May 15, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | New CVE Received | [email protected] |