CVE-2026-86487: CWE-863 in JetBrains YouTrack
A vulnerability in JetBrains YouTrack before version 2026.2.18634 allows read-only whiteboard users to modify canvas content via a crafted WebSocket message. This issue is identified as CWE-863, which relates to improper authorization. The vulnerability has a low CVSS score of 3.1, indicating limited impact. No official patch or remediation guidance is currently provided by the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-86487 is an authorization bypass vulnerability in JetBrains YouTrack affecting versions prior to 2026.2.18634. It allows users with read-only whiteboard permissions to modify canvas content by sending a specially crafted WebSocket message. The flaw is categorized under CWE-863 (Incorrect Authorization). The CVSS 3.1 base score is 3.1, reflecting low severity with network attack vector, high attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or availability impact, and limited integrity impact.
Potential Impact
The vulnerability permits unauthorized modification of whiteboard canvas content by users who should only have read-only access. This could lead to unauthorized changes in collaborative environments but does not affect confidentiality or availability. The overall impact is limited to integrity with low severity.
Mitigation Recommendations
No official remediation or patch has been announced by JetBrains as of the publication date. Users should monitor vendor advisories for updates. Since the vulnerability requires a crafted WebSocket message and low privileges, restricting access to trusted users and monitoring WebSocket traffic may help reduce risk until a fix is available.
CVE-2026-86487: CWE-863 in JetBrains YouTrack
Description
A vulnerability in JetBrains YouTrack before version 2026.2.18634 allows read-only whiteboard users to modify canvas content via a crafted WebSocket message. This issue is identified as CWE-863, which relates to improper authorization. The vulnerability has a low CVSS score of 3.1, indicating limited impact. No official patch or remediation guidance is currently provided by the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 3.1low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86487 is an authorization bypass vulnerability in JetBrains YouTrack affecting versions prior to 2026.2.18634. It allows users with read-only whiteboard permissions to modify canvas content by sending a specially crafted WebSocket message. The flaw is categorized under CWE-863 (Incorrect Authorization). The CVSS 3.1 base score is 3.1, reflecting low severity with network attack vector, high attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or availability impact, and limited integrity impact.
Potential Impact
The vulnerability permits unauthorized modification of whiteboard canvas content by users who should only have read-only access. This could lead to unauthorized changes in collaborative environments but does not affect confidentiality or availability. The overall impact is limited to integrity with low severity.
Mitigation Recommendations
No official remediation or patch has been announced by JetBrains as of the publication date. Users should monitor vendor advisories for updates. Since the vulnerability requires a crafted WebSocket message and low privileges, restricting access to trusted users and monitoring WebSocket traffic may help reduce risk until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:36.285Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9ee859acd9273b49f0e40e
Added to database: 09/07/2026, 16:37:45 UTC
Last enriched: 09/07/2026, 16:54:47 UTC
Last updated: 09/08/2026, 01:52:12 UTC
Views: 10
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