PT-2026-51598 · Fasterxml · Jackson-Databind

Published 2026-06-23 · Updated 2026-06-23 · CVE-2026-54515

Mitre

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, 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. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4.

Fix

Weakness Enumeration

CWE-915

Related Identifiers

CVE-2026-54515

Affected Products

Jackson-Databind

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-54515 · Security Note
• https://github.com/FasterXML/jackson-databind/issues/5962 · Note
• https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa · Note
• https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v · Note
• https://github.com/FasterXML/jackson-databind/issues/5964 · Note