What is CVE-2026-84645?

CVE-2026-84645 is a high-severity vulnerability, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-02.

How severe is CVE-2026-84645?

High severity. CVSS v3 base score is 8.8 out of 10.

CVE-2026-84645

CVE-2026-84645

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, objects of types marked as storing their configuration in independent top-level configuration files in Jenkins (such as the global configuration and jobs) can appear as nested field values in user-submitted `config.xml` documents and subsequently handle HTTP requests via Stapler, resulting in remote code execution.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-94 — Code Injection
CWE-915 — Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

jenkinsci-cert@googlegroups.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-84645?: CVE-2026-84645 is a high-severity vulnerability, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-02.
How severe is CVE-2026-84645?: High severity. CVSS v3 base score is 8.8 out of 10.