CVE-2026-59889
jackson-databind: @JsonView ypassed for @JsonUnwrapped container properties on deserialization
Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.18.0 until 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1, UnwrappedPropertyHandler.processUnwrapped() replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without a prop.visibleInView(ctxt.getActiveView()) guard, allowing a property annotated with both @JsonView and @JsonUnwrapped to be written from attacker JSON under a less-privileged active view. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
INFO
Published Date :
July 14, 2026, 9:17 p.m.
Last Modified :
July 16, 2026, 4:19 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update jackson-databind to version 2.18.9 or later.
- Update jackson-databind to version 2.21.5 or later.
- Update jackson-databind to version 2.22.1 or later.
- Update jackson-databind to version 3.1.5 or later.
Public PoC/Exploit Available at Github
CVE-2026-59889 has a 7 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59889.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59889 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59889
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
LLM-assisted variant-analysis engine for CVE research: hunt a known vulnerability pattern across public open-source, then validate and rank hits to cut false positives. Ships with a benchmark measuring FP-rate reduction vs raw pattern matching. Findings are unverified leads for coordinated disclosure.
appsec bug-bounty cve sast security-research static-analysis variant-analysis vulnerability-research
Python JavaScript
INTENTIONALLY VULNERABLE FHIR-style healthcare app for training on cross-tenant authorization/IDOR flaws — isolated/educational use only
appsec fhir healthcare-security idor security-training vulnerable-app
Dockerfile JavaScript
CodeQL queries for authorization gaps, cross-tenant IDOR, and unsafe deserialization
appsec codeql deserialization idor sast security
CodeQL Java JavaScript
Semgrep rules for missing-function-level authorization, cross-tenant IDOR, and unsafe deserialization — mapped to disclosed CVEs
appsec authorization idor sast semgrep static-analysis
JavaScript Java PHP Python TypeScript
INTENTIONALLY VULNERABLE FHIR-style healthcare app for training on cross-tenant authorization/IDOR flaws — isolated/educational use only
appsec fhir healthcare-security idor security-training vulnerable-app
Dockerfile JavaScript
CodeQL queries for authorization gaps, cross-tenant IDOR, and unsafe deserialization
appsec codeql deserialization idor sast security
CodeQL Java JavaScript
Semgrep rules for missing-function-level authorization, cross-tenant IDOR, and unsafe deserialization — mapped to disclosed CVEs
appsec authorization idor sast semgrep static-analysis
JavaScript Java PHP Python TypeScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59889 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59889 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 16, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-59889', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-16T14:50:03.943048Z'} -
New CVE Received by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'FasterXML', 'product': 'jackson-databind', 'versions': [{'status': 'affected', 'version': '>= 2.18.0, < 2.18.9'}, {'status': 'affected', 'version': '>= 2.21.0, < 2.21.5'}, {'status': 'affected', 'version': '>= 2.22.0, < 2.22.1'}, {'status': 'affected', 'version': '>= 3.0.0, < 3.1.5'}, {'status': 'affected', 'version': '>= 3.2.0, < 3.2.1'}]}] Added Description jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.18.0 until 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1, UnwrappedPropertyHandler.processUnwrapped() replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without a prop.visibleInView(ctxt.getActiveView()) guard, allowing a property annotated with both @JsonView and @JsonUnwrapped to be written from attacker JSON under a less-privileged active view. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CWE CWE-863 Added Reference https://github.com/FasterXML/jackson-databind/commit/d627a8a86fcb062429282f79f3f256f181ed2c7b Added Reference https://github.com/FasterXML/jackson-databind/issues/6060 Added Reference https://github.com/FasterXML/jackson-databind/pull/6056 Added Reference https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5gvw-p9qm-jgwh