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The Hacker News
25 Jul 2026

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 auth

// analyst note

This briefing summarises reporting from The Hacker News. 90@! Ltd curates and rewrites third-party cybersecurity reporting for UK defenders. For the full technical write-up, read the original source.

Curated by 90@! Ltd from The Hacker News. Read the original for full technical detail.

Read original at The Hacker News

// 90@! Ltd

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