CVE-2026-41466

MEDIUM 5.4

ProjeQtor < 12.4.4 Stored XSS via checkValidHtmlText()

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	projeqtor
Product	projeqtor
Published	Apr 27, 2026
Last Updated	Apr 27, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

ProjeQtor / ProjeQtor

7.0 ≤ 12.4.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Yassine Damiri Noé Susset