SB2026062905 - Multiple vulnerabilities in Jenkins Script Security plugin

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Main Vulnerability Database SB2026062905

SB2026062905 - Multiple vulnerabilities in Jenkins Script Security plugin

Published: June 29, 2026

Security Bulletin ID SB2026062905
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Protection mechanism failure (CVE-ID: CVE-2026-57280)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to the affected plugin does not intercept the implicit type casts applied to the elements of typed for-each loops in sandboxed Groovy scripts. A remote user can invoke arbitrary constructors and bypass the sandbox protection.


2) CRLF injection (CVE-ID: CVE-2026-57281)

CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of attacker-supplied data. A remote user can execute arbitrary code outside the sandbox if a suitable script is present on the classpath of the component that evaluates the script


Remediation

Install update from vendor's website.

References