In JetBrains YouTrack before 2026.2.19562 information disclosure via shared mailbox message history was possible

Summary

In JetBrains YouTrack before 2026.2.19562 information disclosure via shared mailbox message history was possible

Remediation

1. Inventory every JetBrains YouTrack deployment, including staging.
2. Upgrade JetBrains YouTrack to 2026.2.19562.
3. Confirm the running version after the upgrade.

References

• Referencehttps://www.jetbrains.com/privacy-security/issues-fixed/