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CVE-2026-54516

5.3 · MEDIUM

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

Published Jun 23, 2026CWE-915EPSS 0.45%

Overview

CVE-2026-54516 is a medium-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, 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, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty("renamed") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 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/c3d56dd25d52319828147c5b9aeabf2d485c250aGitHubgithub.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074afGitHubgithub.com/FasterXML/jackson-databind/pull/5967GitHubgithub.com/FasterXML/jackson-databind/pull/5968GitHubgithub.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55

How CyberStrike helps

Frequently asked questions

What is CVE-2026-54516?

CVE-2026-54516 is a medium-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-54516?

This vulnerability has a CVSS 3.1 base score of 5.3, 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-2026-54516?

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-2026-54516?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-54516 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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