CVE-2026-16723

EUVD-2026-47929
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
alibabaCNA
9 CRITICAL
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 47%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
alibabafastjson
1.2.68 ≤
𝑥
≤ 1.2.83
CNA
Common Weakness Enumeration
References
https://github.com/alibaba/fastjson2/wiki/Security-Advisory:-Remote-Code-Execution-in-fastjson-1.2.68%E2%80%931.2.83