EUVD-2026-72507
GHSA-m4mg-c2jx-4939
Severity by source
AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
PR:H reflects admin-only icon upload capability; UI:R for victim page view; S:U and C:L/I:L capture limited browser-side XSS impact without server scope change.
Primary rating from Vendor (JetBrains).
CVSS VectorVendor: JetBrains
Lifecycle Timeline
2DescriptionCVE.org
In JetBrains YouTrack before 2026.2.18634 stored XSS was possible via project and organization icon uploads
AnalysisAI
Stored cross-site scripting in JetBrains YouTrack before version 2026.2.18634 allows a high-privileged attacker to inject malicious scripts by uploading crafted project or organization icon files. When other authenticated users subsequently view the affected project or organization page, the stored payload executes in their browser context, enabling session data exposure or unauthorized in-application actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already hold project-admin or organization-admin privileges in the YouTrack instance (CVSS PR:H), confining the realistic threat surface to insider scenarios or cases where an admin account has been previously compromised. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-assigned CVSS 3.1 score of 3.5 (Low) accurately reflects the realistic exploitation bar. … 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 vendor 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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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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