Advisory details:
github_osv / GHSA-5jmj-h7xm-6q6v
| Advisory ID | github_osv/GHSA-5jmj-h7xm-6q6v |
| Aliases |
CVE-2026-54515
|
| Summary | 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. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.8 |
| Risk | 2.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 5.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-5jmj-h7xm-6q6v/GHSA-5jmj-h7xm-6q6v.json |
| generic_textual | MODERATE |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-06-24T12:21:39Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/54xxx/CVE-2026-54515.json
Source Advisory: vulnrichment/CVE-2026-54515
[{'Exploitation': 'none'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]