CVE-2025-6216

Critical

Description

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. Was ZDI-CAN-27104.

SeverityCritical

CVSS9.8

Exploit probability—

ProductAlltena Allegra

PublishedJun 21, 2025

First seenJun 21, 2025

Weakness typeCWE-640CWE-640

How to fix

Update

alltena allegra7.5.2.70, 8.1.24 or later

Vendor advisories

alltena.com/en/resources/release-notes/release-notes-for-release-8-1-4-and-release-7-5-2

Affected products

Product	Affected versions	Fixed in
alltena allegra	7.0.0 ≤ v < 7.5.2.70, 8.0.0 ≤ v < 8.1.24	7.5.2.70, 8.1.24

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