CVE-2026-45126

3.5 Faible

Publiée le 18/08/2026 à 18:17 · Modifiée le 08/09/2026 à 23:02 · Analyse NVD reportée · Source : security-advisories@github.com

Description

MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP Security Questions module does not validate the anti-CSRF token correctly, allowing same-site attackers to enable or disable registration challenge questions with a specially crafted URL. The controller processes GET requests for the disable and enable actions to modify mybb_questions.active without verifying the my_post_key token attached by the user interface. The uniquely identifying implementation details include admin/modules/config/questions.php. This issue is fixed in version 1.8.40.

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Produits concernés

mybb

Scores CVSS

Version	Score	Source	Vecteur
3.1	3.5 Faible	security-advisories@github.com	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N`

Faiblesses (CWE)

CWE-352

Références

https://github.com/mybb/mybb/commit/6893b395c7fa3b9e4de6235caea0ce198c376c4f
https://github.com/mybb/mybb/releases/tag/mybb_1840
https://github.com/mybb/mybb/security/advisories/GHSA-m42q-vgx3-fqcc
https://mybb.com/versions/1.8.40

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories