CVE-2026-54515mediumCWE-915

CVE-2026-54515: fallo de gravedad media en FasterXML jackson-databind

jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

Publicada el · Actualizada el

33Vexday Risk Score

Sin señal de explotación. Ella tiene prueba de concepto pública.

ssvc Attendcvss 5.3epss 0.4%
de la publicación al arma45 días
Publicada en NVD23 jun
1ª PoC+45d
probabilidad de explotación
0.4%top 64% de las CVE
explotación observada
noninguna fuente lo reporta
1 exploit(s) público(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Productos afectados
FasterXML · jackson-databind
PoCs públicas encontradas — 1
githubgithub.com/xiaoqiMikko/jackson-check★ 0
⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
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Referencias
https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fahttps://github.com/FasterXML/jackson-databind/issues/5962https://github.com/FasterXML/jackson-databind/issues/5964https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v