🛡️ CVE-2020-2135 — script-security

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-693 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Sandbox bypass vulnerability in Script Security Plugin

Sandbox protection in Script Security Plugin 1.70 and earlier can be circumvented through:

  • Crafted constructor calls and bodies (due to an incomplete fix of [SECURITY-582](https://www.jenkins.io/security/advisory/2017-08-07/#super-constructor-calls))
  • Crafted method calls on objects that implement GroovyInterceptable

This allows attackers able to specify and run sandboxed scripts to execute arbitrary code in the context of the Jenkins controller JVM.

Script Security Plugin 1.71 has additional restrictions and sanity checks to ensure that super constructors cannot be constructed without being intercepted by the sandbox. In addition, it also intercepts method calls on objects that implement GroovyInterceptable as calls to GroovyObject#invokeMethod(String, Object), which is on the list of dangerous signatures and should not be approved for use in the sandbox.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2020-2135 is classified as CWE-693: Protection Mechanism Failure. A protection exists but does not cover the case at hand, so it can be worked around.

Affected software

CVE-2020-2135 is recorded against 1 package.

  • org.jenkins-ci.plugins:script-security (fixed in 1.71)

Timeline and source

Published on 24 May 2022 and last revised on 19 June 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
jenkins.io (Web)
www.openwall.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-693
Public Exploit ✅ No
Source OSV
Published 2022-05-24
Updated 2026-08-12
Modified 2025-06-19
Fix URL N/A

Affected Packages

Software From version Fixed in
org.jenkins-ci.plugins:script-security — 1.71

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