Quick answers
- Is CVE-2026-75045 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75045 being exploited in the wild.
- How severe is CVE-2026-75045?
- Critical severity, with a CVSS score of 9.1, published 17 August 2026.
- Which products and versions are affected?
- Jetbrains YouTrack before 2025.3.156085, 2026.1.13913, 2026.2.18112.
- Is there a fix for CVE-2026-75045?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-75045 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-75045?
- 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.
Technical details
The vulnerability is an authentication bypass in YouTrack's backup download functionality, exploitable through a weakness in shared draft signature validation. An unauthenticated attacker can craft requests using the shared draft signature mechanism to download database backups without providing valid credentials or authentication tokens. The attack requires network access to the YouTrack instance and no user interaction. Successful exploitation allows complete unauthorized access to database backups containing all stored data. The vulnerability is fixed in YouTrack versions 2025.3.156085, 2026.1.13913, and 2026.2.18112 or later.
Affected products
- JetBrains YouTrack before 2025.3.156085, 2026.1.13913, 2026.2.18112
Timeline
- 2026-08-17: disclosed