CVE-2026-102372

GestSup versions before 3.2.61 fail to properly sanitize HTML email bodies in the IMAP LOGIN connector, allowing unauthenticated attackers to store arbitrary JavaScript in ticket descriptions and replies. Attackers can send emails to the monitored mailbox containing script tags and event handlers that execute in technician browsers, enabling ticket data theft and unauthorized actions.

CVSS 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-09-29

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/
• https://gestsup.fr/index.php?page=changelog
• https://gestsup.fr/index.php?page=download
• https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.61&type=patch
• https://www.vulncheck.com/advisories/gestsup-before-3.2.62-stored-xss-via-email-body-in-login-imap-connector

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