CVE-2026-59889: CWE-863: Incorrect Authorization in FasterXML jackson-databind
A vulnerability in FasterXML jackson-databind versions from 2.18.0 up to but not including 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 allows incorrect authorization due to improper handling of @JsonUnwrapped and @JsonView annotations. This can enable an attacker to write JSON properties under a less-privileged active view. The issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
AI Analysis
Technical Summary
The jackson-databind library contains a flaw in the UnwrappedPropertyHandler.processUnwrapped() method where it replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without enforcing the visibility guard prop.visibleInView(ctxt.getActiveView()). This allows a property annotated with both @JsonView and @JsonUnwrapped to be deserialized and set from attacker-controlled JSON under a less-privileged active view, resulting in incorrect authorization. The vulnerability affects versions 2.18.0 through before 2.18.9, all versions before 2.21.5, 2.22.1, 3.1.5, and 3.2.1. The issue is resolved in the fixed versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
Potential Impact
An attacker with the ability to supply JSON input can bypass intended view-based authorization controls, allowing unauthorized modification of properties that should be restricted under certain views. This leads to an integrity impact without affecting confidentiality or availability.
Mitigation Recommendations
Upgrade jackson-databind to one of the fixed versions: 2.18.9, 2.21.5, 2.22.1, 3.1.5, or 3.2.1. Patch status is confirmed by the vendor advisory. No other mitigations are specified.
CVE-2026-59889: CWE-863: Incorrect Authorization in FasterXML jackson-databind
Description
A vulnerability in FasterXML jackson-databind versions from 2.18.0 up to but not including 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 allows incorrect authorization due to improper handling of @JsonUnwrapped and @JsonView annotations. This can enable an attacker to write JSON properties under a less-privileged active view. The issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
CVSS v3.1
Score 6.5medium
Affected software
pkg:maven/com.fasterxml.jackson.core/jackson-databindRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The jackson-databind library contains a flaw in the UnwrappedPropertyHandler.processUnwrapped() method where it replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without enforcing the visibility guard prop.visibleInView(ctxt.getActiveView()). This allows a property annotated with both @JsonView and @JsonUnwrapped to be deserialized and set from attacker-controlled JSON under a less-privileged active view, resulting in incorrect authorization. The vulnerability affects versions 2.18.0 through before 2.18.9, all versions before 2.21.5, 2.22.1, 3.1.5, and 3.2.1. The issue is resolved in the fixed versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
Potential Impact
An attacker with the ability to supply JSON input can bypass intended view-based authorization controls, allowing unauthorized modification of properties that should be restricted under certain views. This leads to an integrity impact without affecting confidentiality or availability.
Mitigation Recommendations
Upgrade jackson-databind to one of the fixed versions: 2.18.9, 2.21.5, 2.22.1, 3.1.5, or 3.2.1. Patch status is confirmed by the vendor advisory. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-07T16:40:07.983Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a569d2168715ace43280ecb
Added to database: 07/14/2026, 20:33:37 UTC
Last enriched: 07/14/2026, 20:54:42 UTC
Last updated: 07/14/2026, 21:04:55 UTC
Views: 3
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