CVE-2026-22198

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published1/9/2026

Last Modified1/14/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gestsup:gestsup

Weaknesses (CWE)

CWE-79

References

https://gestsup.fr/index.php?page=changelog(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/gestsup-stored-xss-in-api-error-logs(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.