INCIDENT EVIDENCE GRAPH

Unpatched Fastjson Vulnerability Exploited in Attacks

2026-07-28T07:27:55Z

The critical remote code execution bug can be exploited without authentication, under the library’s stock default configurations. The post Unpatched Fastjson Vulnerability Exploited in Attacks appeared first on SecurityWeek .

• Exploit: Unpatched Fastjson remote code execution vulnerability
• Method: Unauthenticated remote code execution against default-configured Fastjson deployments

Primary evidence

1. Unpatched Fastjson Vulnerability Exploited in Attacks

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