Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M
CVE-2026-59889jackson-databind: @JsonView ypassed for @JsonUnwrapped container properties on deserialization
Medium 6.5
In plain English
A medium-severity incorrect authorization in jackson-databind from FasterXML. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.21.5 | GHSA-5gvw-p9qm-jgwh |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.22.1 | GHSA-5gvw-p9qm-jgwh |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.18.9 | GHSA-5gvw-p9qm-jgwh |
| Maven | tools.jackson.core:jackson-databind | 3.2.1 | GHSA-5gvw-p9qm-jgwh |
| Maven | tools.jackson.core:jackson-databind | 3.1.5 | GHSA-5gvw-p9qm-jgwh |
| Ubuntu:22.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-59889 |
| Ubuntu:24.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-59889 |
| Ubuntu:26.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-59889 |
| Ubuntu:26.10 | jackson-databind | no fix listed | UBUNTU-CVE-2026-59889 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FasterXML | jackson-databind | >= 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 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5gvw-p9qm-jgwh x_refsource_CONFIRM
- https://github.com/FasterXML/jackson-databind/issues/6060 x_refsource_MISC
- https://github.com/FasterXML/jackson-databind/pull/6056 x_refsource_MISC
- https://github.com/FasterXML/jackson-databind/commit/d627a8a86fcb062429282f79f3f256f181ed2c7b x_refsource_MISC