Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Network-reachable missing-auth bypass to admin with low complexity and no auth; impact stays within YouTrack's own authority, so S:U (9.8) rather than the vendor's S:C, pending confirmation of the 'direct database access' precondition.
Primary rating from Vendor (JetBrains).
CVSS VectorVendor: JetBrains
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
In JetBrains YouTrack before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429 authentication bypass via direct database access leading to administrative access was possible
AnalysisAI
Authentication bypass in JetBrains YouTrack allows attackers to obtain full administrative access by leveraging a direct-database-access code path, per CWE-306 (missing authentication for a critical function). All self-hosted YouTrack builds prior to the 2026.1.13757 / 2025.3.148033 / 2025.2.148048 / 2025.1.148120 / 2024.3.148430 / 2024.2.148429 fix trains are affected, and JetBrains rates it CVSS 10.0. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The core prerequisite named in the description is the 'direct database access' path that enables the authentication bypass to administrative access - the exact preconditions for reaching it (network-only versus some level of database or internal access) are not fully clear from the CVE text and should be confirmed against the JetBrains advisory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H = 10.0) describes a network-reachable, low-complexity, unauthenticated attack yielding full confidentiality, integrity and availability impact with scope change - the highest-priority profile possible. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the YouTrack instance targets the unauthenticated code path implicated by the missing-authentication flaw and obtains administrative access to the tracker, then reads confidential project/issue data, tampers with tickets, and pivots into integrated source control or CI credentials stored or referenced in YouTrack. No public exploit is identified at time of analysis, and the low attack complexity (AC:L) means that once the technique is known, exploitation would require little sophistication. |
| Remediation | Vendor-released patch: upgrade to the corresponding fixed build for your release branch - 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, or 2024.2.148429 (choose the build at or above your current major.minor line). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all YouTrack self-hosted instances and identify their current versions against the following patch thresholds by release train: 2026.1 must be at least version 13757, 2025.3 at least 148033, 2025.2 at least 148048, 2025.1 at least 148120, 2024.3 at least 148430, and 2024.2 at least 148429. …
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Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-43656
GHSA-cfrg-hc6v-824g