EUVD-2026-70116
GHSA-6q2p-xwgj-7xw4
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible, no complexity beyond valid credentials; PR:L required since configuration-submit permission is needed; full triad justified by deserialization RCE potential.
Primary rating from Vendor (jenkins).
CVSS VectorVendor: jenkins
Lifecycle Timeline
4DescriptionCVE.org
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.
Articles & Coverage 2
AnalysisAI
Unsafe Java deserialization in Jenkins 2.579 and earlier (LTS 2.568.2 and earlier) allows authenticated users with configuration-submission permissions to control the values of transient fields during deserialization, with impact ranging up to full server compromise depending on how those fields are used internally. Transient fields in Java are normally excluded from serialization to protect derived or sensitive state; this flaw breaks that guarantee when processing externally supplied configuration data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid Jenkins account with permission to submit configuration updates - typically the Job/Configure permission or higher, such as Overall/Administer. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures the core risk profile: network-accessible exploitation requiring only low-privilege authenticated access, with potential for full confidentiality, integrity, and availability impact. … 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 | The primary remediation is to upgrade Jenkins to version 2.580 (weekly channel) or 2.568.3 (LTS channel), both of which enforce exclusion of transient fields from deserialization. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all users with Jenkins configuration-submission permissions and restrict access to essential personnel only, documenting current user roles and access levels. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today