CVE-2025-6216

Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability

Published Jun 21, 2025 CVSS 3.0 · 9.8 Critical EPSS 47.8% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-28704 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.
History
Type Values Removed Values Added
First Time appeared Alltena
Alltena allegra
CPEs cpe:2.3:a:alltena:allegra:*:*:*:*:*:*:*:*
Vendors & Products Alltena
Alltena allegra
Type Values Removed Values Added
Metrics epss

{'score': 0.10482}

epss

{'score': 0.09026}

Type Values Removed Values Added
Metrics epss

{'score': 0.00423}

epss

{'score': 0.10482}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability
Weaknesses CWE-640
References
Metrics cvssV3_0

{'score': 9.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
zdi
Published
Updated
Jun 23, 2025, 4:14 PM
Reserved
Jun 17, 2025, 9:48 PM
Status
Analyzed
Published
Jun 21, 2025, 1:15 AM
Modified
Jun 17, 2026, 10:01 AM