Critical Security Update for AssertJ Core: CVE-2026-24400

assertj-core Updated 21 Sep 2026

Summary

21/09/2026
N/A
Yes i
Medium
6.1

RHSA-2026:69106: Red Hat Security Advisory: assertj-core security update. Affects assertj-core versions < 0:3.24.2-9.el10_0.1. Fixed in 0:3.24.2-9.el10_0.1. How to fix ↓

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Background

AssertJ Core is a popular Java library that provides a rich set of assertions for testing. It enhances the testing experience by allowing developers to write fluent and expressive assertions. However, like any software, it can be susceptible to vulnerabilities that may compromise the integrity and security of applications relying on it.

Vulnerability Detail

The vulnerability identified as CVE-2026-24400 affects AssertJ Core and its associated Javadoc package. This issue arises from improper handling of certain inputs, which could allow an attacker to exploit the library in a way that compromises the confidentiality of sensitive information. The potential ramifications include unauthorized access to data and disruption of application functionality. The CVSS score for this vulnerability is 6.1, indicating a moderate level of risk that should be addressed promptly.

How To Fix

Minimum fixed version

0:3.24.2-9.el10_0.1

This is the first release that contains the fix.

sudo dnf update assertj-core

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Workaround

As a temporary measure, users can limit the exposure of their applications by restricting access to the components that utilize AssertJ Core until the update is applied. This may involve modifying access controls or disabling certain features that rely on the vulnerable library.

Conclusion

The CVE-2026-24400 vulnerability in AssertJ Core poses a significant risk to applications utilizing this library. It is crucial for developers to update to the patched version to mitigate potential security threats. By following the outlined steps and utilizing tools like Vulert, developers can ensure their applications remain secure.

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FAQ

CVE-2026-24400 is a security vulnerability affecting the AssertJ Core library, which could lead to unauthorized access to sensitive information.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

The CVSS score for CVE-2026-24400 is 6.1, indicating a moderate risk level.

If an immediate update is not possible, consider implementing access restrictions to minimize exposure to the vulnerability.

Related vulnerabilities

Recent vulnerabilities recorded for assertj-core.

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How To Fix

Minimum fixed version

0:3.24.2-9.el10_0.1

This is the first release that contains the fix.

sudo dnf update assertj-core

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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