EUVD-2026-72509
GHSA-vqpp-qf88-72p9
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Network-accessible API exploitable by any authenticated read-only user (PR:L); no confidentiality or availability impact, only unauthorized write to whiteboard cards (I:H).
Primary rating from Vendor (JetBrains).
CVSS VectorVendor: JetBrains
Lifecycle Timeline
3DescriptionCVE.org
In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed read-only users to create and modify whiteboard cards
AnalysisAI
Improper authorization in JetBrains YouTrack before 2026.2.18634 allows authenticated read-only users to create and modify whiteboard cards, exceeding their intended permissions. The flaw (CWE-863) bypasses YouTrack's role-based access controls for the whiteboard feature, enabling low-privileged users to perform write operations they should be denied. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid YouTrack user account assigned a read-only role - this is the minimum authentication level needed to reach the whiteboard card API. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N scores 6.5 (Medium), which is plausible. … 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 - this is the vendor-confirmed fix per the JetBrains security advisory at https://www.jetbrains.com/privacy-security/issues-fixed/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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JetBrains YouTrack before 2021.4.40426 was vulnerable to SSTI (Server-Side Template Injection) via FreeMarker templates.
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In JetBrains YouTrack before 2020.5.3123, server-side template injection (SSTI) was possible, which could lead to code e
An SSRF attack was possible on a JetBrains YouTrack server. Rated critical severity (CVSS 9.8), this vulnerability is re
Certain actions could cause privilege escalation for issue attachments in JetBrains YouTrack. Rated critical severity (C
An Insecure Direct Object Reference, with Authorization Bypass through a User-Controlled Key, was possible in JetBrains
A query injection was possible in JetBrains YouTrack. Rated critical severity (CVSS 9.8), this vulnerability is remotely
In JetBrains YouTrack before 2021.1.11111, sandboxing in workflows was insufficient. Rated critical severity (CVSS 9.1),
Privilege escalation in JetBrains YouTrack before version 2026.2.18634 enables authenticated low-privileged users to alt
Same weakness CWE-863 – Incorrect Authorization
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External POC / Exploit Code
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