Medium severity4.3NVD Advisory· Published Sep 2, 2026· Updated Sep 15, 2026
CVE-2026-84655
CVE-2026-84655
Description
Jenkins 2.579 and earlier, LTS 2.568.2 and earlier does not escape map keys when serializing objects as JSON and Python through its REST API, allowing attackers able to control map property names to inject arbitrary fields into JSON and Python API responses.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <=2.579, LTS <=2.568.2
Patches
Vulnerability mechanics
References
1- www.jenkins.io/security/advisory/2026-09-02/nvdVendor Advisory
News mentions
3- Jenkins: 25 Vulnerabilities Disclosed Together, Including RCE and XSS FlawsVypr Intelligence · Sep 2, 2026
- Jenkins: 14 Vulnerabilities Disclosed Together, Including High-Severity Deserialization FlawsVypr Intelligence · Sep 2, 2026
- Jenkins Security Advisory 2026-09-02Jenkins Security Advisories · Sep 2, 2026