Description
An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a bad randomness function. This allows the attacker to get valid sessions for arbitrary users, and optionally reset their password. Tested and confirmed in a default installation of version 7.2.3. Earlier versions are affected, possibly earlier major versions as well.
Metrics
CVSS 3.1 9.1/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://b2evolution.net/downloads/7-2-5-stablePatch, Vendor Advisory
- https://github.com/b2evolution/b2evolution/blob/master/inc/_core/_misc.funcs.php#L5955Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/114Issue Tracking, Third Party Advisory
- https://b2evolution.net/downloads/7-2-5-stablePatch, Vendor Advisory
- https://github.com/b2evolution/b2evolution/blob/master/inc/_core/_misc.funcs.php#L5955Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/114Issue Tracking, Third Party Advisory
Timeline
- Published
- Sep 28, 2022
- Last modified
- Jun 17, 2026
- NVD status
- Modified