CVE-2026-117616

High

Description

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier provides an HTTP endpoint that loads agents by name without validating the name, allowing attackers with Overall/Read permission to load any config.xml file on the controller file system as an agent configuration, and to overwrite an arbitrary config.xml file when that agent is saved, potentially resulting in arbitrary code execution.

SeverityHigh

CVSS8.8

Exploit probability—

Product

Jenkins

PublishedOct 28, 2026

First seenNov 4, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

jenkins jenkins2.580.2, 2.588 or later

Vendor advisories

jenkins.io/security/advisory/2026-10-28/#SECURITY-4188

Affected products

Product	Affected versions	Fixed in
jenkins jenkins	v < 2.580.2, v < 2.588	2.580.2, 2.588

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