CVE-2026-86481: CWE-639 in JetBrains YouTrack
A vulnerability in JetBrains YouTrack before version 2026.2.18634 allows signed URL reuse, which can lead to the disclosure of restricted project icons. This issue is classified under CWE-639, indicating an authorization bypass due to improper handling of signed URLs. The vulnerability has a medium severity with a CVSS score of 4.3.
AI Analysis
Technical Summary
CVE-2026-86481 is a security vulnerability in JetBrains YouTrack where signed URLs could be reused to access restricted project icons. This flaw is related to CWE-639, which involves authorization bypass through improper validation of signed URLs. The vulnerability affects versions of YouTrack prior to 2026.2.18634. There is no official remediation level or patch information available at this time, and no known exploits are reported in the wild.
Potential Impact
The vulnerability allows an attacker with some level of privileges (PR:L) to reuse signed URLs to disclose restricted project icons, potentially leaking information that should be access-controlled. The impact is limited to confidentiality (C:L) with no impact on integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should be cautious with signed URL handling and restrict access to sensitive URLs. Monitor JetBrains advisories for updates.
CVE-2026-86481: CWE-639 in JetBrains YouTrack
Description
A vulnerability in JetBrains YouTrack before version 2026.2.18634 allows signed URL reuse, which can lead to the disclosure of restricted project icons. This issue is classified under CWE-639, indicating an authorization bypass due to improper handling of signed URLs. The vulnerability has a medium severity with a CVSS score of 4.3.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86481 is a security vulnerability in JetBrains YouTrack where signed URLs could be reused to access restricted project icons. This flaw is related to CWE-639, which involves authorization bypass through improper validation of signed URLs. The vulnerability affects versions of YouTrack prior to 2026.2.18634. There is no official remediation level or patch information available at this time, and no known exploits are reported in the wild.
Potential Impact
The vulnerability allows an attacker with some level of privileges (PR:L) to reuse signed URLs to disclose restricted project icons, potentially leaking information that should be access-controlled. The impact is limited to confidentiality (C:L) with no impact on integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should be cautious with signed URL handling and restrict access to sensitive URLs. Monitor JetBrains advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:34.326Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9ee857acd9273b49f0e3e4
Added to database: 09/07/2026, 16:37:43 UTC
Last enriched: 09/07/2026, 17:08:29 UTC
Last updated: 09/08/2026, 01:03:36 UTC
Views: 11
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