Vulnerability Description
GestSup versions prior to 3.2.60 contain a pre-authentication stored cross-site scripting (XSS) vulnerability in the API error logging functionality. By sending an API request with a crafted X-API-KEY header value (for example, to /api/v1/ticket.php), an unauthenticated attacker can cause attacker-controlled HTML/JavaScript to be written to log entries. When an administrator later views the affected logs in the web interface, the injected content is rendered without proper output encoding, resulting in arbitrary script execution in the administrator’s browser session.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gestsup | Gestsup | <= 3.2.56 |
Related Weaknesses (CWE)
References
- https://gestsup.fr/index.php?page=changelogRelease Notes
- https://www.vulncheck.com/advisories/gestsup-stored-xss-in-api-error-logsThird Party Advisory
FAQ
What is CVE-2026-22198?
CVE-2026-22198 is a vulnerability with a CVSS score of 6.1 (MEDIUM). GestSup versions prior to 3.2.60 contain a pre-authentication stored cross-site scripting (XSS) vulnerability in the API error logging functionality. By sending an API request with a crafted X-API-KEY...
How severe is CVE-2026-22198?
CVE-2026-22198 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22198?
Check the references section above for vendor advisories and patch information. Affected products include: Gestsup Gestsup.