A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier allows attackers with Item/Read permission on at least one…

published 2026-09-02 2 mo ago modified 2026-09-16 53 d ago also BIT-jenkins-2026-84656 , EUVD-2026-70122

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits: 0; none known

A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier allows attackers with Item/Read permission on at least one job to read build parameter names and values of jobs they have no access to.

Patch / fix

fixed in 2

bitnami jenkins 2.568.3, 2.580.0
Jenkins Project Jenkins 2.580

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-84656 updated 2026-09-28 cvss 4.3

jenkins: Jenkins: Information disclosure via missing permission check

Red Hat OpenShift Developer Tools and Services jenkins
affected: workaround, no fix available “Update to Jenkins 2.580 (weekly) or Jenkins LTS 2.568.3 or later.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 mo ago (2026-09-02)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
OSV	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	jenkins	<2.568.3 >=2.569.0, <2.580.0	2.568.3 2.580.0

Affected products

Jenkins Project Jenkins

Classification

Weakness

CWE-862 Missing Authorization

Technology feeds

Jenkins rss critical rss

References

jenkins.io /security/advisory/2026-09-02/#SECURITY-4006
vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2026-84656
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary