4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-53650

CVE-2025-53650: Jenkins Credentials Binding Plugin vulnerability can expose sensitive information in logger messages

Jenkins Credentials Binding Plugin 687.v619cb_15e923f and earlier does not properly mask (i.e., replace with asterisks) credentials present in exception error messages that are written to the build log.

Credentials Binding Plugin 687.689.v1a_f775332fc9 rethrows exceptions that contain credentials, masking those credentials in the error messages.

(GitHub Advisory)

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CVE-2025-53650

CVE-2025-53650:

4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.jenkins-ci.plugins:credentials-binding	maven	< 687.689.v1a	687.689.v1a

Technical Details

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Root Cause Analysis

The vulnerability analysis identified that Jenkins Credentials Binding Plugin was susceptible to leaking credentials in build logs through unsanitized exception messages. The root cause was the lack of a mechanism to intercept and mask credentials within exceptions thrown from code executing inside a withCredentials block.

The investigation focused on the patch that fixed the vulnerability, identified by comparing the last vulnerable version with the first patched version. The key change was found in the org.jenkinsci.plugins.credentialsbinding.impl.BindingStep.Execution.doStart method. This method orchestrates the execution of the user-provided code block after binding credentials to environment variables.

The patch introduces a FailureHandler to the workflow step's execution context. This handler, implemented as a new inner class Handler, uses the newly added MaskedException class to wrap any exception that occurs. The MaskedException.of() method recursively scans the exception message, cause, and suppressed exceptions for patterns matching the bound credentials and replaces them with asterisks.

Therefore, the doStart method is identified as the vulnerable function because it was its responsibility to manage the execution environment, and it was missing the crucial security control for sanitizing exceptions. Any exploit of this vulnerability would involve this function being on the call stack when an exception is thrown and logged.

Vulnerable functions

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WAF Rule

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Reasoning

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