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6.5

YouTrack Import Endpoint Allows Denial of Service

CVE-2026-75047 · published 2 months ago
Summary

JetBrains YouTrack versions before 2026.2.18177 are at risk of a denial-of-service attack if an attacker sends a specially crafted file to the import endpoint. This could cause the server to become unresponsive or crash. To mitigate this risk, update to the latest version of YouTrack or apply the necessary security patches.

What to do
  • Update jetbrains youtrack to version 2026.2.18177 or later.
Affected software
VendorProductAffected versions
jetbrains youtrack < 2026.2.18177
Original advisory text
In JetBrains YouTrack before 2026.2.18177 doS attack was possible via a decompression bomb in the import endpoint
In JetBrains YouTrack before 2026.2.18177 doS attack was possible via a decompression bomb in the import endpoint
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.5 Medium
Exploitation
1% chance of attack within 30 days
Type
CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
Timeline
Published17 Aug 2026
Updated4 Nov 2026
First seen17 Aug 2026
Sources
CVE-2026-75047 · NVD
CVE-2026-75047 · MITRE
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