What is GHSA-5jmj-h7xm-6q6v?

GHSA-5jmj-h7xm-6q6v is a security advisory published by GitHub Security Advisories with Medium severity. jackson-databind has case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

Which CVE IDs does GHSA-5jmj-h7xm-6q6v cover?

GHSA-5jmj-h7xm-6q6v covers the following CVE IDs: CVE-2026-54515. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5jmj-h7xm-6q6v?

GHSA-5jmj-h7xm-6q6v has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

Which products are affected by GHSA-5jmj-h7xm-6q6v?

GHSA-5jmj-h7xm-6q6v affects 5 products, including: maven/com.fasterxml.jackson.core:jackson-databind:\u003e= 3.1.0, \u003c 3.1.4; maven/tools.jackson.core:jackson-databind:\u003e= 3.1.0, \u003c 3.1.4; maven/com.fasterxml.jackson.core:jackson-databind:\u003e= 2.8.0, \u003c 2.18.9; maven/com.fasterxml.jackson.core:jackson-databind:\u003e= 2.19.0, \u003c 2.21.5; maven/com.fasterxml.jackson.core:jackson-databind:\u003e= 2.22.0, \u003c 2.22.1.

GHSA-5jmj-h7xm-6q6vMediumCVSS 5.3

jackson-databind has case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

Vendor

GitHub Security Advisories

Published

June 23, 2026

Last Modified

June 30, 2026

🔗 CVE IDs covered (1)

CVE-2026-54515 →

📋 Description

Summary

In BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again.

Impact

An application that both enables case-insensitive matching and relies on per-property @JsonIgnoreProperties to keep a field unwritable can have that field set from untrusted JSON (mass-assignment-style write).

Affected / Patched

Will be fixed in 2.18.9, 2.21.5, 2.22.1 and 3.1.4.

Severity / CWE

Maintainer: minor. Reporter: Moderate. CWE-915.

Upstream fix

FasterXML/jackson-databind#5962 (PR #5964, 0e1b0b2), milestone 3.1.4. Released 2026-06-04.

🎯 Affected products5

maven/com.fasterxml.jackson.core:jackson-databind:>= 3.1.0, < 3.1.4
maven/tools.jackson.core:jackson-databind:>= 3.1.0, < 3.1.4
maven/com.fasterxml.jackson.core:jackson-databind:>= 2.8.0, < 2.18.9
maven/com.fasterxml.jackson.core:jackson-databind:>= 2.19.0, < 2.21.5
maven/com.fasterxml.jackson.core:jackson-databind:>= 2.22.0, < 2.22.1