CVE-2026-16723

9.0 CRITICAL

Published: July 23, 2026 Modified: July 23, 2026

Description

A remote code execution (RCE) vulnerability exists in fastjson 1.2.68 through 1.2.83. This vulnerability is exploitable under fastjson's stock default configuration — no AutoType enablement required, no classpath gadget required.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/alibaba/fastjson2/wiki/Security-Advisory:-Remote-Code-Execution-in-fastjson-1.2.68%E2%80%931.2.83

Source: alibaba-cna@list.alibaba-inc.com

1 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.0 / 10.0

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-20 CWE-502

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