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
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Public exploits 14
- 1xPwn/CVE-2026-16723 PoC on GitHub
- EQSTLab/CVE-2026-16723 PoC on GitHub
- Ethen1212/fastjson-CVE-2026-16723 PoC on GitHub
- HORKimhab/CVE-2026-16723 PoC on GitHub
- Superman-L/CVE-2026-16723 PoC on GitHub
- cuttlefish520/FastJson1.2.83-GenProbe2 PoC on GitHub
- dichen-L/CVE-2026-16723-vul PoC on GitHub
- dinosn/fastjson-jsontype-rce-lab PoC on GitHub
- fazilbaig1/CVE-2026-16723 PoC on GitHub
- ipisav/fastjson-cve PoC on GitHub
- learner330/fastjson-cve-2026-16723 PoC on GitHub
- why-success/fastjson-rce-lab PoC on GitHub
- xiaoqiMikko/fastjson-check PoC on GitHub
- yym8538/CVE-2026-16723 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Change history 1
- First seenCVSS 9.0NVD modified 2026-10-24 13:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.