# CVE-2026-102373: GestSup access control bypass in thread comment enumeration

Source: https://junglewise.ai/threats/cve-2026-102373-gestsup-versions-before-3-2-62-fail-to-validate-ticket-ownership  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-29. Updated: 2026-09-29  
License: CC BY 4.0 with a link back

CVE-2026-102373 · Severity: medium · CVSS 6.5 · Published 2026-09-29

GestSup is a support ticket management system used by organizations to track and resolve customer issues. Authenticated users can bypass access controls to read private comments from other users' support tickets by sequentially guessing comment IDs, gaining unauthorized access to sensitive information. This allows attackers to view confidential ticket details they should not have permission to access.

Technologies: [GestSup](https://junglewise.ai/threats/technologies/gestsup). Vendors: [GestSup](https://junglewise.ai/threats/vendors/gestsup).

## Quick answers

**Is CVE-2026-102373 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102373 being exploited in the wild.

**How severe is CVE-2026-102373?** Medium severity, with a CVSS score of 6.5, published 29 September 2026.

**Which products and versions are affected?** GestSup before 3.2.62.

**Is there a fix for CVE-2026-102373?** A patch was published on 2026-08-24: Fix included in version 3.2.62 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-102373 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-102373?** Check whether you run GestSup at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

GestSup versions before 3.2.62 fail to properly validate ticket ownership when loading comments via the threadedit parameter in thread.php. An authenticated attacker can enumerate sequential comment IDs to retrieve private comments from other users' tickets without authorization. The vulnerability requires valid authentication but allows horizontal privilege escalation to read arbitrary ticket comments.

## Affected products

- GestSup GestSup before 3.2.62

## Timeline

- 2026-09-29: disclosed
- 2026-08-24: patched: Fix included in version 3.2.62

## References

- [https://gestsup.fr/index.php?page=changelog](https://gestsup.fr/index.php?page=changelog)
- [https://gestsup.fr/index.php?page=download](https://gestsup.fr/index.php?page=download)

## Related threats

- [GestSup stored cross-site scripting in IMAP OAuth connector](https://junglewise.ai/threats/cve-2026-102374-gestsup-versions-before-3-2-62-contain-a-stored-cross-site)
- [GestSup stored cross-site scripting in IMAP mail connector](https://junglewise.ai/threats/cve-2026-102372-gestsup-versions-before-3-2-62-fail-to-properly-sanitize-html)
- [GestSup remote code execution in IMAP connector attachment handling](https://junglewise.ai/threats/cve-2026-100389-gestsup-versions-before-3-2-61-contain-a-remote-code-execution)