# CVE-2026-123324: JetBrains YouTrack information disclosure in shared mailbox message history

Source: https://junglewise.ai/threats/cve-2026-123324-in-jetbrains-youtrack-before-2026-2-19562-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-123324 · Severity: high · CVSS 7.7 · Published 2026-11-06

JetBrains YouTrack is a project management and issue tracking platform used by development teams. A flaw in how the application handles shared mailbox message history could allow unauthorized users to access sensitive communications and information they should not be able to view.

Technologies: [Jetbrains YouTrack](https://junglewise.ai/threats/technologies/youtrack). Vendors: [Jetbrains](https://junglewise.ai/threats/vendors/jetbrains).

## Quick answers

**Is CVE-2026-123324 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-123324 being exploited in the wild.

**How severe is CVE-2026-123324?** High severity, with a CVSS score of 7.7, published 6 November 2026.

**Which products and versions are affected?** Jetbrains YouTrack before 2026.2.19562.

**Is there a fix for CVE-2026-123324?** Yes: fixed in YouTrack 2026.2.19562. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-123324 attacked?** It is in a web application.

**Am I affected by CVE-2026-123324?** Check whether you run Jetbrains YouTrack 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.

## How to fix

- Fixed in YouTrack 2026.2.19562

## Technical details

The vulnerability is an information disclosure flaw affecting YouTrack's shared mailbox message history functionality. It allows attackers to view sensitive message history in shared mailboxes through an unspecified attack vector. The issue is resolved in version 2026.2.19562 and later.

## Affected products

- JetBrains YouTrack before 2026.2.19562

## Timeline

- 2026-11-06: disclosed

## References

- [https://www.jetbrains.com/privacy-security/issues-fixed/](https://www.jetbrains.com/privacy-security/issues-fixed/)

## Related threats

- [JetBrains YouTrack missing authorization in VCS hosting configuration](https://junglewise.ai/threats/cve-2026-123332-in-jetbrains-youtrack-before-2026-2-19562-missing-authorization)
- [JetBrains YouTrack article visibility restriction bypass](https://junglewise.ai/threats/cve-2026-123331-in-jetbrains-youtrack-before-2026-2-19197-article-editors-could)
- [JetBrains YouTrack missing authorization in issue visibility settings](https://junglewise.ai/threats/cve-2026-123330-in-jetbrains-youtrack-before-2026-2-19562-missing-authorization)
- [JetBrains YouTrack missing authorization in TeamCity integration](https://junglewise.ai/threats/cve-2026-123329-in-jetbrains-youtrack-before-2026-2-19562-missing-authorization)
- [JetBrains YouTrack app permission bypass privilege escalation](https://junglewise.ai/threats/cve-2026-123328-in-jetbrains-youtrack-before-2026-2-19656-app-permission-bypass)