CVE-2026-84670
Jenkins Performance Plugin Insecure Deserialization of Cached Reports
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.
INFO
Published Date :
Sept. 2, 2026, 4:17 p.m.
Last Modified :
Sept. 2, 2026, 5:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Jenkins Performance Plugin to the latest version.
- Apply vendor-supplied security patches.
- Restrict access to Jenkins controller configuration.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-84670.
| URL | Resource |
|---|---|
| https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4026 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-84670 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-84670
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-84670 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-84670 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 02, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-502 Added SSVC {'id': 'CVE-2026-84670', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-09-02T16:57:47.332103Z'} -
New CVE Received by [email protected]
Sep. 02, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/84xxx/CVE-2026-84670.json">CVE-2026-84670</a> Added Reference https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4026