EUVD-2026-72510
GHSA-8w82-5pw4-6hqw
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Network-reachable clone endpoint, low complexity, authenticated user required, scope crosses access-domain boundary to inaccessible issues, integrity-only impact with no confidentiality or availability effect.
Primary rating from Vendor (JetBrains).
CVSS VectorVendor: JetBrains
Lifecycle Timeline
4DescriptionCVE.org
In JetBrains YouTrack before 2026.2.18634 cloning a whiteboard allowed unauthorized changes to links on inaccessible issues
AnalysisAI
Unauthorized integrity modification in JetBrains YouTrack before 2026.2.18634 allows any authenticated low-privilege user to alter links on issues they are explicitly prohibited from accessing by exploiting the whiteboard clone operation. The whiteboard clone workflow fails to validate the cloning user's authorization against issues referenced in the board, enabling cross-boundary write access governed by CWE-862 (Missing Authorization). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated user account on the target YouTrack instance with at least low-privilege access (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.7 with AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N is internally consistent and credible: any authenticated YouTrack user can reach the clone endpoint over the network with no special configuration, no elevated privileges, and no victim interaction, and the resulting unauthorized link writes cross security domain boundaries. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade JetBrains YouTrack to version 2026.2.18634 or later, as documented in the JetBrains security advisory at https://www.jetbrains.com/privacy-security/issues-fixed/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory your YouTrack deployment to confirm versions (identify any prior to 2026.2.18634) and map which user roles have whiteboard access, prioritizing assessment of low-privilege account capabilities. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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Privilege escalation in JetBrains YouTrack before version 2026.2.18634 enables authenticated low-privileged users to alt
Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
Leaving vuln.today