CVE-2026-42520

Description

Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers able to provide credentials to a job to write files to arbitrary locations on the node filesystem, which can lead to remote code execution if Jenkins is configured to allow a low-privileged user to configure file or zip file credentials used for a job running on the built-in node.

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CVSS v3.1 Score

7.5

HIGH

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

EPSS — Exploit Prediction

0.0239

Probability of exploitation

0.85%

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-22 Path Traversal

Affected Products

Vendor	Product	Versions
jenkins	credentials_binding	< 719.v80e905ef14eb

References

Advisories & Patches

https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3672

Frequently Asked Questions

What is CVE-2026-42520? +

Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers able to provide credentials to a job to write files to arbitrary locations on the node filesystem, which can lead to remote code execution if Jenkins is configured to allow a low-privileged user to configure file or zip file credentials used for a job running on the built-in node. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-42520? +

CVE-2026-42520 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0239, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-42520? +

CVE-2026-42520 affects products from jenkins, specifically: credentials_binding. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42520? +

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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