CVE Catalog

CVE-2026-102374

MediumCVSS 6.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

10th percentile - higher than 10% of all known CVEs

Summary

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.

Risk Assessment

The organization is at risk of ticket data theft and unauthorized actions in technician sessions, potentially leading to data confidentiality and integrity breaches.

Recommendation

Update GestSup to version 3.2.62 or later. Restrict access to monitored mailboxes and train staff on security.

Other vulnerabilities in GestSup

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS