alibaba/fastjson2 · Security
fastjson has a remote code execution (RCE) vulnerability
- GHSA ID
- GHSA-crf3-v9rr-v7hj
- CVE ID
- CVE-2026-16723
- Severity
- critical
- Published
- Updated
- CVSS
- 9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS v3
- 9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
CWEs
- CWE-20 · Improper Input Validation