CVE-2026-45129
MyBB: ACP Recovery Codes CSRF
- State
- Published
- Severity
- 4.6 Medium
- Published
- Aug 18, 2026
- Updated
- Aug 18, 2026
- Reserved
- May 8, 2026
Description
MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP Recovery Codes module does not validate requests correctly, allowing same-site attackers to rotate a victim administrator's recovery codes with a specially crafted URL. The Admin CP Home, Preferences, Recovery Codes action=recovery_codes page regenerates Two-Factor Authentication recovery codes in mybb_adminoptions.recovery_codes on GET requests without request forgery protection. The uniquely identifying implementation details include admin/modules/home/preferences.php. This issue is fixed in version 1.8.40.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.6 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L | GitHub_M |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
mybbmybb |
|
References
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