EUVD-2026-80747
GHSA-83vw-vw7m-wjq2
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable script submission with low complexity, but PR:L for the script-authoring permission; total code execution on the controller yields C:H/I:H/A:H - S:U kept per vendor though sandbox escape arguably warrants S:C.
Primary rating from Vendor (jenkins).
CVSS VectorVendor: jenkins
Lifecycle Timeline
5DescriptionCVE.org
Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier does not intercept operations performed on a null receiver (method calls, property and attribute accesses, and array accesses), allowing attackers with permission to define and run sandboxed scripts, including Pipelines, to bypass the sandbox protection and execute arbitrary code in the context of the Jenkins controller JVM.
Articles & Coverage 1
AnalysisAI
Sandbox escape in the Jenkins Script Security Plugin (1415.v9a_f9b_3a_c253d and earlier) allows authenticated users with permission to define and run sandboxed Groovy or Pipeline scripts to execute arbitrary code in the Jenkins controller JVM, because the sandbox fails to intercept method calls, property and attribute accesses, and array accesses made on a null receiver. No non-default configuration is required - the weakness is inherent to the default sandbox - and the flaw is rated CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, CWE-693), with CISA SSVC assessing total technical impact but no active exploitation and no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated Jenkins user who holds permission to define and run sandboxed scripts, including Pipelines (typically Job/Configure or equivalent Pipeline-authoring rights). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine, high-quality-signal sandbox-escape-to-RCE flaw, but its real-world urgency is moderated by an access prerequisite. … 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 | Apply the vendor fix: update the Jenkins Script Security Plugin to the corrected version documented in the Jenkins Security Advisory 2026-09-16 (SECURITY-3931, https://www.jenkins.io/security/advisory/2026-09-16/#SECURITY-3931); patch availability is confirmed by vendor advisory, but no fixed version string is stated in the data available for this analysis, so the advisory should be consulted for the exact plugin version before rolling out, and the fixed plugin should be deployed via the Jenkins Update Center or by dropping the .hpi into $JENKINS_HOME/plugins with a controller restart. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Jenkins controller running Script Security Plugin 1415.v9a_f9b_3a_c253d or earlier and confirm whether Pipeline or Groovy script authoring is granted to any user outside a small, vetted administrator group; immediately revoke Job/Configure, Script Approvals, and related authoring permissions from all accounts that do not require them, and audit the controller for unexpected jobs, credentials, or outbound connections. …
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External POC / Exploit Code
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