CVE-2026-41467

ProjeQtor < 12.4.4 Stored XSS via checkValidFileName()

CVSS 5.1 MEDIUMEPSS 0.2%CWE-79

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.1EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

27 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

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

Affected products

ProjeQtor · ProjeQtor

public PoCs found — 2

cve_referencedamiri.fr/en/cves/CVE-2026-41467unverified cve_referencegryfman.fr/cves/CVE-2026-41467unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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