CVEvulnerability
CVE-2026-102374
5.3 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-09-29
- Last modified
- 2026-09-30
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.3 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
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.
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/ blog.spiizn.xyz
- https://gestsup.fr/index.php?page=changelog gestsup.fr
- https://gestsup.fr/index.php?page=download gestsup.fr
- https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.62&type=patch gestsup.fr
- https://www.vulncheck.com/advisories/gestsup-before-3.2.62-stored-xss-via-double-decoded-email-subject-in-oauth-imap-connector www.vulncheck.com