Allegra - Authentication Bypass via Predictable Password Reset Token
Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the password recovery mechanism. The issue results from reliance upon a predictable value when generating a password reset token. An attacker can leverage this vulnerability to bypass authentication on the application. References: https://www.zerodayinitiative.com/advisories/ZDI-25-410/ https://alltena.com/en/resources/release-notes/release-notes-for-release-8-1-4-and-release-7-5-2 https://nvd.nist.gov/vuln/detail/CVE-2025-6216 Remediation: Upgrade Allegra to version 8.1.4 or 7.5.2 or later to fix the predictable password reset token vulnerability.
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