jackson-databind has case-insensitive deserialization bypasses per-property @JsonIgnoreProperties
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.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | com.fasterxml.jackson.core:jackson-databind | >= 3.1.0, < 3.1.4, >= 2.8.0, < 2.18.9, >= 2.19.0, < 2.21.5, >= 2.22.0, < 2.22.1 | 3.1.4, 2.18.9, 2.21.5, 2.22.1 |
| Java / Kotlin (Maven) | tools.jackson.core:jackson-databind | >= 3.1.0, < 3.1.4 | 3.1.4 |
Referencias
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v
- https://nvd.nist.gov/vuln/detail/CVE-2026-54515
- https://github.com/FasterXML/jackson-databind/issues/5962
- https://github.com/FasterXML/jackson-databind/issues/5964
- https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa
- https://github.com/FasterXML/jackson-databind
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Debilidad (CWE)
CWE-915- Plataforma
- Java / Kotlin (Maven)
- Paquete
com.fasterxml.jackson.core:jackson-databind, tools.jackson.core:jackson-databind- Publicada
- 23.06.2026
- Actualizado
- 11.10.2026 13:20
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-5jmj-h7xm-6q6v - CC BY 4.0
Historial de vulnerabilidades: tools.jackson.core:jackson-databind
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 15
- Primera → última
- 06.2026 09.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 5
- Media 10
Divulgaciones por año
- 2026: 15
-
jackson-databind has case-insensitive deserialization bypasses per-property @JsonIgnoreProperties esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.