CVE-2024-25191

CVE-2024-25191 is a critical authentication bypass vulnerability affecting zihanggao php-jwt version 1.0.0. The flaw stems from the use of the non-constant time strcmp function for authentication verification, enabling attackers to exploit a timing side channel. This vulnerability carries a CVSS score of 9.8 (Critical), indicating a high potential for complete compromise of confidentiality, integrity, and availability with low attack complexity and no user interaction required. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.