Incorrect authorization in jackson-databind - CVE-2026-54518
Published: July 22, 2026
Vulnerability identifier: #VU139153
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-54518
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FasterXML
Affected software:
jackson-databind
jackson-databind
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass write-side authorization restrictions and modify view-restricted creator parameters.
The vulnerability exists due to improper authorization in UnwrappedPropertyHandler.processUnwrappedCreatorProperties() when processing untrusted JSON input for unwrapped creator parameters. A remote attacker can supply crafted JSON data to bypass write-side authorization restrictions and modify view-restricted creator parameters.
This issue occurs when applications use @JsonView as a write-side authorization boundary together with constructor parameters annotated with both @JsonView and @JsonUnwrapped.
How to mitigate CVE-2026-54518
Install security update from vendor's website.