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.
History

Wed, 30 Sep 2026 11:30:00 +0000


Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
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.
Title GestSup before 3.2.62 Stored XSS via Double-Decoded Email Subject in OAuth IMAP Connector
First Time appeared Gestsup
Gestsup gestsup
Weaknesses CWE-79
CPEs cpe:2.3:a:gestsup:gestsup:*:*:*:*:*:*:*:*
Vendors & Products Gestsup
Gestsup gestsup
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-29T00:33:24.255Z

Updated: 2026-09-30T11:15:14.390Z

Reserved: 2026-09-28T23:57:27.220Z

Link: CVE-2026-102374

cve-icon Vulnrichment

Updated: 2026-09-29T10:46:46.688Z

cve-icon NVD

Status : Deferred

Published: 2026-09-29T01:16:44.900

Modified: 2026-09-30T17:32:07.107

Link: CVE-2026-102374

cve-icon Redhat

No data.