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.

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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.

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