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

    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 requires

    Affected vendors and products

    Source: https://thehackernews.com/2026/07/fastjson-1x-rce-vulnerability-targeted.html

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