CVE-2026-102374
MEDIUM
NVD
CVSS Score
6.1
Severity
MEDIUM
Published
Sep 29, 2026
Vendor
unknown
Description
GestSup versions before 3.2.62 contain a stored cross-site scripting vulnerability in the IMAP OAuth connector that double-decodes MIME-encoded email subjects after HTML escaping. Unauthenticated attackers can send crafted emails to monitored mailboxes with nested MIME encoded-words to inject JavaScript that executes in technician sessions when viewing tickets.