5.4 Medium

CVE-2026-117613 Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not restrict item types in collections after deserialization,…

Description

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not restrict item types in collections after deserialization, allowing attackers with access to POST config.xml API endpoints to submit crafted `config.xml` files that can lead to, e.g., stored cross-site scripting (XSS) vulnerabilities.

CVSS 3.1 detail

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitable remotely over the network, without an account and if a user takes an action; the impact on data or service is limited.

Attack vector: Network
Attack complexity: Low
Privileges required: None
Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Affected products and versions

Product	Affected versions	Fixed in
Jenkins 2.588	earliest → < 2.588	2.588
Jenkins 2.580	earliest → < 2.580.2	2.580.2

References

Jenkins Security Advisory 2026-10-28 www.jenkins.io

Timeline

Published October 28, 2026
Last modified November 5, 2026

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