by Kastro
Paper/Archive/CVE-2025-6216

CVE-2025-6216

Allegra Allegra — Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability

EPSS 48%CVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 98.9.989 × 2019.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Allegra8.1.3.32–CNA

Scores by source

zdi (CNA)9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refzerodayinitiative.com/advisories/ZDI-25-410advisoryalltena.com/en/resources/release-notes/release-notes-for-release-8-1-4-and-release-7-5-2