PT-2026-63585 · Alibaba · Fastjson

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CVE-2026-16723

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Published

2026-07-23

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Updated

2026-07-23

CVSS v3.1

9.0

Critical

VectorAV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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.

Fix

RCE

Deserialization of Untrusted Data

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Weakness Enumeration

Related Identifiers

CVE-2026-16723

Affected Products

Fastjson