CVE-2025-6216

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.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-640 CWE-640

Affected Products

Vendor	Product	Versions
alltena	allegra	7.0.0 — 7.5.2.70
alltena	allegra	8.0.0 — 8.1.24

References

Advisories & Patches

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

Other References

https://www.zerodayinitiative.com/advisories/ZDI-25-410/

Frequently Asked Questions

What is CVE-2025-6216? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-6216? +

CVE-2025-6216 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-6216? +

CVE-2025-6216 affects products from alltena, specifically: allegra. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6216? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-53373

Natours is a Tour Booking API. The attacker can easily take over any victim account by injecting an attacker-controlled server …

CVE-2025-29995

This vulnerability exists in the CAP back office application due to a weak password-reset mechanism implemented at API endpoints. An …

CVE-2023-7028 10.0

An issue has been discovered in GitLab CE/EE affecting all versions from 16.1 prior to 16.1.6, 16.2 prior to 16.2.9, …

CVE-2024-38468 9.8

Shenzhen Guoxin Synthesis image system before 8.3.0 allows unauthorized password resets via the resetPassword API.

CVE-2025-43932 9.8

JobCenter through 7e7b0b2 allows account takeover via the password reset feature because SERVER_NAME is not configured and thus a reset …

CVE-2025-43931 9.8

flask-boilerplate through a170e7c allows account takeover via the password reset feature because SERVER_NAME is not configured and thus a reset …