CVE-2026-53438

Description

A missing permission check in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allows attackers with Item/Cancel permission, but lacking Item/Read permission, to cancel queue items they do not have permission to view.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
jenkins	jenkins	< 2.555.3
jenkins	jenkins	< 2.568

References

Advisories & Patches

https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3712

Frequently Asked Questions

What is CVE-2026-53438? +

A missing permission check in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allows attackers with Item/Cancel permission, but lacking Item/Read permission, to cancel queue items they do not have permission to view. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-53438? +

CVE-2026-53438 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-53438? +

CVE-2026-53438 affects products from jenkins, specifically: jenkins. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-53438? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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