CVE-2026-86488: CWE-639 in JetBrains YouTrack
CVE-2026-86488 is a medium severity vulnerability in JetBrains YouTrack before version 2026.2.18634. It involves an Insecure Direct Object Reference (iDOR) via the watchRules and issueListConfig endpoints, which could expose private saved searches to unauthorized users. The vulnerability has a CVSS 3.1 score of 6.5, indicating a network attack vector with low attack complexity and requiring low privileges, but no user interaction. Confidentiality impact is high, while integrity and availability are not affected. No official patch or remediation guidance has been provided yet by the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-86488) affects JetBrains YouTrack versions prior to 2026.2.18634. It is classified as CWE-639 (Authorization Bypass Through User-Controlled Key) and allows unauthorized access to private saved searches through the watchRules and issueListConfig endpoints. The flaw could lead to exposure of sensitive information stored in saved searches. The CVSS 3.1 vector indicates the attack can be performed remotely over the network with low complexity and requires some privileges but no user interaction. No known exploits are reported in the wild, and no official fix or patch has been documented at this time.
Potential Impact
The vulnerability allows unauthorized disclosure of private saved searches in YouTrack, potentially exposing sensitive project or issue tracking information. The confidentiality impact is high, but there is no impact on integrity or availability. Attackers with low privileges could exploit this remotely without user interaction. No active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected endpoints and limit user privileges to reduce exposure risk. Monitor for updates from JetBrains regarding patches or workarounds.
CVE-2026-86488: CWE-639 in JetBrains YouTrack
Description
CVE-2026-86488 is a medium severity vulnerability in JetBrains YouTrack before version 2026.2.18634. It involves an Insecure Direct Object Reference (iDOR) via the watchRules and issueListConfig endpoints, which could expose private saved searches to unauthorized users. The vulnerability has a CVSS 3.1 score of 6.5, indicating a network attack vector with low attack complexity and requiring low privileges, but no user interaction. Confidentiality impact is high, while integrity and availability are not affected. No official patch or remediation guidance has been provided yet by the vendor.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/jetbrains/YouTrackRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-86488) affects JetBrains YouTrack versions prior to 2026.2.18634. It is classified as CWE-639 (Authorization Bypass Through User-Controlled Key) and allows unauthorized access to private saved searches through the watchRules and issueListConfig endpoints. The flaw could lead to exposure of sensitive information stored in saved searches. The CVSS 3.1 vector indicates the attack can be performed remotely over the network with low complexity and requires some privileges but no user interaction. No known exploits are reported in the wild, and no official fix or patch has been documented at this time.
Potential Impact
The vulnerability allows unauthorized disclosure of private saved searches in YouTrack, potentially exposing sensitive project or issue tracking information. The confidentiality impact is high, but there is no impact on integrity or availability. Attackers with low privileges could exploit this remotely without user interaction. No active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected endpoints and limit user privileges to reduce exposure risk. Monitor for updates from JetBrains regarding patches or workarounds.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:36.500Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9ee859acd9273b49f0e410
Added to database: 09/07/2026, 16:37:45 UTC
Last enriched: 09/07/2026, 16:54:40 UTC
Last updated: 09/08/2026, 00:20:09 UTC
Views: 9
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.