Critical HashiCorp Vault Vulnerabilities Allow Authentication Bypass and DoS Attacks

HashiCorp has disclosed two critical vulnerabilities in Vault and Vault Enterprise that could enable attackers to bypass authentication mechanisms and launch denial-of-service attacks against infrastructure. The first vulnerability, identified under Bulletin ID HCSEC-2025-31, stems from a regression in how Vault processes JSON payloads. According to HashiCorp’s disclosure published on October 23, 2025, the vulnerability allows […]

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