Vulnerability · Published Apr 27, 2026 · Assigned by VulnCheck

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

Medium 5.4

In plain English

A medium-severity cross-site scripting in ProjeQtor from ProjeQtor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 92.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
ProjeQtor	ProjeQtor	7.0 – through 12.4.3

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

https://damiri.fr/en/cves/CVE-2026-41467 technical-description, exploit
https://gryfman.fr/cves/CVE-2026-41467 technical-description, exploit
https://www.projeqtor.com product
https://www.vulncheck.com/advisories/projeqtor-stored-xss-via-checkvalidfilename third-party-advisory