Answer in brief
CVE-2026-54515 records a Medium severity (CVSS 5.3) vulnerability in jackson-databind has case-insensitive deserialization bypasses per-property @JsonIgnoreProperties. The current sources do not mark it as known exploited. The current feed maps com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| com.fasterxml.jackson.core:jackson-databindmaven | >=3.1.0,<3.1.4 | 3.1.4 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.8.0,<2.18.9 | 2.18.9 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0,<2.21.5 | 2.21.5 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.22.0,<2.22.1 | 2.22.1 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=3.1.0 <3.1.4 | 3.1.4 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.8.0 <2.18.9 | 2.18.9 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0 <2.21.5 | 2.21.5 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.22.0 <2.22.1 | 2.22.1 |
| tools.jackson.core:jackson-databindmaven | >=3.1.0,<3.1.4 | 3.1.4 |
| tools.jackson.core:jackson-databindmaven | >=3.1.0 <3.1.4 | 3.1.4 |
Published upstream
Jun 23, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Jun 23, 2026
## 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 Fixed in 2.18.9, 2.21.5 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. ## Credits Omkhar Arasaratnam (@omkhar) - finder.
Quoted source text, attributed separately from HOL analysis.