CVE-2026-102372 json
GestSup before 3.2.61 Stored XSS via Email Body in LOGIN IMAP Connector
published last mo. modified last mo. also EUVD-2026-88596
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2026-102372 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- blog.spiizn.xyz https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | 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 |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.3 | 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 |
Affected products
- GestSup GestSup
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
gestsup.fr
/index.php?page=download&channel=stable&version=3.2.61&type=patch
patch
-
blog.spiizn.xyz
/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/
technical-description, exploit
-
gestsup.fr
/index.php?page=changelog
release-notes
-
gestsup.fr
/index.php?page=download
product
-
vulncheck.com
/advisories/gestsup-before-3.2.62-stored-xss-via-email-body-in-login-imap-connector
third-party-advisory
Sources
- CVE List CVE-2026-102372
- NVD CVE-2026-102372
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