Fastjson 1.x RCE Vulnerability Targeted in Attacks With No Patched Available

The Hacker News 25 July 2026, 15:52 EEST Security

Security firms ThreatBook and Imperva say attackers are targeting a critical flaw in Fastjson, Alibaba's JSON library for Java. In affected Spring Boot applications, a malicious JSON request can execute code without authentication, with the privileges of the Java process. Tracked as CVE-2026-16723, the vulnerability carries an Alibaba-assigned CVSS score of 9.0. The confirmed chain…

Read the full story on The Hacker News https://thehackernews.com/2026/07/fastjson-1x-rce-vulnerability-targeted.html

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