by Kastro
Paper/Archive/CVE-2026-16723

CVE-2026-16723

Alibaba Fastjson — Remote Code Execution in fastjson 1.2.68–1.2.83

EPSS 0.7%CVSS 9.0
critical.is priorityof 100
37
CVSS 9.0 (CNA)9.0 / 10 × 3027.0Not in CISA KEV+300.0EPSS percentile 51.7.517 × 2010.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Fastjson1.2.68 – 1.2.83–CNA

Scores by source

alibaba (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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