Medium severity · published Jul 14, 2026
CVE-2026-59889
jackson-databind: @JsonView ypassed for @JsonUnwrapped container properties on deserialization
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JA
jackson-databind · FasterXML
>= 2.0.0-RC1, < 2.18.9; >= 2.19.0, < 2.21.5; >= 2.22.0, < 2.22.1; >= 3.0.0, < 3.1.5; >= 3.2.0, < 3.2.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59889
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59889
github.com
https://github.com/FasterXML/jackson-databind/commit/d627a8a86fcb062429282f79f3f256f181ed2c7b
github.com
https://github.com/FasterXML/jackson-databind/issues/6060
github.com
https://github.com/FasterXML/jackson-databind/pull/6056
github.com
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5gvw-p9qm-jgwh
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