CVE-2026-86495: CWE-862 in JetBrains YouTrack
Description
CVE-2026-86495 is a vulnerability in JetBrains YouTrack before version 2026.2.18687 where missing permission checks allowed users with limited privileges to create knowledge base articles in projects they should not have access to. This issue is classified under CWE-862 (Missing Authorization). The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. No known exploits are reported in the wild, and the product is not a cloud service. A fix is implied by the versioning but no explicit patch link is provided.
CVSS v3.1
Score 6.5medium
Affected software
JetBrains
YouTrack
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains YouTrack versions prior to 2026.2.18687 contain a missing authorization vulnerability (CWE-862) that allows users with limited permissions to create knowledge base articles in projects that are otherwise inaccessible to them. This could lead to unauthorized content creation within restricted projects. The vulnerability has a CVSS score of 6.5 (medium severity) with an attack vector of network, low attack complexity, requiring low privileges, no user interaction, and impacts integrity but not confidentiality or availability.
Potential Impact
The vulnerability allows unauthorized users to create knowledge base articles in projects they should not access, potentially leading to unauthorized information injection or manipulation within restricted projects. There is no direct impact on confidentiality or availability reported. The integrity of project content can be compromised.
Mitigation Recommendations
Upgrade JetBrains YouTrack to version 2026.2.18687 or later where the missing permission checks have been addressed. Since the product is not a cloud service and no official patch link is provided, users should consult JetBrains' official advisories or release notes for the fix. Patch status is not explicitly confirmed in the provided data; verify with the vendor for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:38.550Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85bacd9273b49f0e43c
Added to database: 09/07/2026, 16:37:47 UTC
Last enriched: 09/15/2026, 01:18:37 UTC
Last updated: 10/21/2026, 13:22:15 UTC
Views: 62
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.