CVE-2026-117623

Medium

Description

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not escape the text shown in the tooltips of breadcrumb bar overflow menu entries, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Overall/Read permission.

SeverityMedium

CVSS5.4

Exploit probability—

Product

Jenkins

PublishedOct 28, 2026

First seenNov 4, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

jenkins jenkins2.580.2, 2.588 or later

Vendor advisories

jenkins.io/security/advisory/2026-10-28/#SECURITY-4229

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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