⤷ Title: Public PoC Exploit Released for fastjson 1.2.83 Remote Code Execution Flaw
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𐀪 Author: Do Son
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ⴵ Time: Wed, 22 Jul 2026 13:18:16 +0000
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⌗ Tags: #Vulnerability Report #Deserialization #Fastjson #fastjson2 #FearsOff #java #proof_of_concept #QVD_2026_43021 #Remote Code Execution #SafeMode #Spring Boot
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Wed, 22 Jul 2026 13:18:16 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #Deserialization #Fastjson #fastjson2 #FearsOff #java #proof_of_concept #QVD_2026_43021 #Remote Code Execution #SafeMode #Spring Boot
Daily CyberSecurity
Public PoC Exploit Released for fastjson 1.2.83 Remote Code Execution Flaw
TL;DR Researcher Kirill Firsov disclosed a fastjson RCE on July 19, 2026. It affects fastjson 1.2.68 through 1.2.83 under stock default settings. Full technical details are public, and third parti…