CRITICAL 9.0

GHSA-crf3-v9rr-v7hj

fastjson has a remote code execution (RCE) vulnerability

Details

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.

Are you affected?

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Affected packages

Maven / com.alibaba:fastjson

Introduced in: 1.2.68

No fixed version published yet for com.alibaba:fastjson (maven). Pin to a known-safe version or switch to an alternative.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-16723 [ADVISORY]
https://github.com/alibaba/fastjson2 [PACKAGE]
https://github.com/alibaba/fastjson2/wiki/Security-Advisory:-Remote-Code-Execution-in-fastjson-1.2.68%E2%80%931.2.83 [WEB]