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CVE-2026-54518

6.5 · MEDIUM

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.

Published Jun 23, 2026CWE-863EPSS 0.35%

Overview

CVE-2026-54518 is a medium-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, UnwrappedPropertyHandler.processUnwrappedCreatorProperties() replays buffered JSON into creator parameters but never consults prop.visibleInView(activeView). The normal property-based creator path gates creator properties on the active view, but this unwrapped-creator replay path bypasses that check, so a constructor parameter annotated with both @JsonView(AdminView.class) and @JsonUnwrapped is populated from attacker JSON even when a more restrictive view is active. This vulnerability is fixed in 2.21.4 and 3.1.4.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341GitHubgithub.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eeaGitHubgithub.com/FasterXML/jackson-databind/pull/5971GitHubgithub.com/FasterXML/jackson-databind/pull/5973GitHubgithub.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962

How CyberStrike helps

Frequently asked questions

What is CVE-2026-54518?

CVE-2026-54518 is a medium-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-54518?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-54518?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-54518?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-54518 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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