CVE-2026-57280: Script security Jenkins Script Security Plugin Sandbox Vulnerability

HIGH
Advisory Identifier: GHSA-c3jm-9vj7-5v66
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CVSS 8.8
CWE-693
Published
Advisory Summary

CVE-2026-57280 is a HIGH (CVSS 8.8) jenkins script security plugin sandbox vulnerability (CWE-693: Protection Mechanism Failure) affecting Script security libraries in the Maven ecosystem. The issue involves jenkins script security plugin sandbox bypass vulnerability. Remediation is available by upgrading affected packages to version 1402.1405.vc96e74964250.

CVE-2026-57280 at a Glance

CVE Identifier CVE-2026-57280
GHSA Identifier GHSA-c3jm-9vj7-5v66
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-693: Protection Mechanism Failure
Affected Product Script security
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-57280

To remediate this vulnerability, upgrade all affected Script security dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.jenkins-ci.plugins:script-security fixed: 1402.1405.vc96e74964250 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>script-security</artifactId>
    <version>1402.1405.vc96e74964250</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-57280, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

Analyze the terminal output to locate any version of Script security in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1402.1405.vc96e74964250), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.plugins command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-693: Protection Mechanism Failure, where the product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. In Script security, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Jenkins Script Security Plugin provides a sandbox feature that allows running user-provided scripts safely by intercepting and checking potentially unsafe operations. Script Security Plugin 1402.v94c9ce464861 and earlier does not intercept the implicit type cast applied to each element of the iterated collection in a typed for loop (e.g. for (Type t in collection)), as this cast is performed during bytecode generation rather than in the transformed script AST. This allows attackers able to provide sandboxed scripts to invoke constructors of arbitrary types without those invocations being checked by the sandbox, bypassing the sandbox protection. This can be used to execute arbitrary code on the Jenkins controller. Script Security Plugin 1402.1405.vc96e74964250 updates the bundled groovy-sandbox library to a version that intercepts the implicit type cast applied to typed for loop elements, so those casts are checked by the sandbox.

CVE-2026-57280 Affected Script security Versions

1 component(s)
Fixed Versions:
1402.1405.vc96e74964250
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:script-security
maven/org.jenkins-ci.plugins/script-security
Maven
< 1402.1405.vc96e74964250
1402.1405.vc96e74964250

References

NVD — CVE-2026-57280 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57280
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/script-security-plugin/commit/858015c25c7bc7ab59c666307093b0e16b90048c
Script security Source Repository REPOSITORY
https://github.com/jenkinsci/script-security-plugin
Script security Release RELEASE
https://github.com/jenkinsci/script-security-plugin/releases/tag/1402.1405.vc96e74964250
Script security Security Information SECURITY
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3792

Frequently Asked Questions

What is CVE-2026-57280?
CVE-2026-57280 is a security vulnerability in Script security involving Jenkins Script Security Plugin sandbox bypass vulnerability under CWE-693: Protection Mechanism Failure.
Which Script security versions are affected?
Affected versions include releases prior to 1402.1405.vc96e74964250 across affected packages: org.jenkins-ci.plugins:script-security.
What version fixes CVE-2026-57280?
Upgrading to 1402.1405.vc96e74964250 (or the latest patched release for your respective branch) resolves the vulnerability.
Is script-security affected?
Yes, org.jenkins-ci.plugins:script-security is affected in releases prior to 1402.1405.vc96e74964250. Upgrade your dependency to 1402.1405.vc96e74964250 or later.
What is the CVSS score of CVE-2026-57280?
CVE-2026-57280 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-57280?
CVE-2026-57280 is classified under CWE-693: Protection Mechanism Failure (The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.).
How can I check Maven dependencies for CVE-2026-57280?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.plugins'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c3jm-9vj7-5v66",
  "modified" : "2026-09-25T18:04:58Z",
  "published" : "2026-06-24T15:31:47Z",
  "aliases" : [ "CVE-2026-57280" ],
  "summary" : "Jenkins Script Security Plugin sandbox bypass vulnerability",
  "details" : "Jenkins Script Security Plugin provides a sandbox feature that allows running user-provided scripts safely by intercepting and checking potentially unsafe operations.\n\nScript Security Plugin 1402.v94c9ce464861 and earlier does not intercept the implicit type cast applied to each element of the iterated collection in a typed for loop (e.g. for (Type t in collection)), as this cast is performed during bytecode generation rather than in the transformed script AST.\n\nThis allows attackers able to provide sandboxed scripts to invoke constructors of arbitrary types without those invocations being checked by the sandbox, bypassing the sandbox protection. This can be used to execute arbitrary code on the Jenkins controller.\n\nScript Security Plugin 1402.1405.vc96e74964250 updates the bundled groovy-sandbox library to a version that intercepts the implicit type cast applied to typed for loop elements, so those casts are checked by the sandbox.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:script-security"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1402.1405.vc96e74964250"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-57280"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/script-security-plugin/commit/858015c25c7bc7ab59c666307093b0e16b90048c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/script-security-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/script-security-plugin/releases/tag/1402.1405.vc96e74964250"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3792"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-693" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-25T18:04:57Z",
    "nvd_published_at" : "2026-06-24T14:17:33Z"
  }
}