CVE-2026-84670 — HIGH (8.8)

Vulnerability Description

Jenkins Performance Plugin 1015.v09ca_52b_3370e and earlier does not restrict the classes that can be instantiated when deserializing cached performance reports stored in the build directory on the Jenkins controller, allowing attackers with Item/Configure permission to execute arbitrary code on the Jenkins controller.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-502

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4026

FAQ

What is CVE-2026-84670?

CVE-2026-84670 is a vulnerability with a CVSS score of 8.8 (HIGH). Jenkins Performance Plugin 1015.v09ca_52b_3370e and earlier does not restrict the classes that can be instantiated when deserializing cached performance reports stored in the build directory on the Je...

How severe is CVE-2026-84670?

CVE-2026-84670 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-84670?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.