Vulnerability · Published Jun 10, 2026 · Assigned by jenkins

CVE-2026-53442

Medium 5.3

In plain English

A medium-severity security flaw in Jenkins from Jenkins Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 92.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Jenkins 2.567 and earlier, LTS 2.555.2 and earlier does not encrypt secrets from POST config.xml submissions before storing them in job configurations unencrypted in job config.xml files on the Jenkins controller where they can be viewed by users with Item/Extended Read permission, or access to the Jenkins controller file system.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.jenkins-ci.main:jenkins-core	2.555.3	GHSA-m6wv-wh8g-64xc
Maven	org.jenkins-ci.main:jenkins-core	2.568	GHSA-m6wv-wh8g-64xc

Affected products (as reported)

Vendor	Product	Versions
Jenkins Project	Jenkins	see references

Weakness: CWE-311 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Jenkins Security Advisory 2026-06-10 vendor-advisory