CVE-2026-45122

Katalog CVE

CVSS 4.3 · Medium EPSS 0,34%

Kerentanan Incorrect Authorization. Skor CVSS 3.1 4.3 (Medium) menurut github.com.

Deskripsi (NVD)

MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not validate moderation permissions for the destination calendar when moving events. A user with moderation permission for the source calendar can move an event to a calendar where the user has only viewing permission because the do_move action in calendar.php does not check canmoderateevents for the target calendar. The uniquely identifying implementation details include calendar event move, source calendar moderation permission, and destination calendar viewing permission. This issue is fixed in version 1.8.40.

Rincian

Terbit di NVD

18 Agustus 2026

Terakhir diubah

8 September 2026

Status NVD

Deferred

CVSS 3.1

4.3 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/mybb/mybb/commit/86ed2058e7f9a2c14828e731f684e997f9bb220c
• https://github.com/mybb/mybb/releases/tag/mybb_1840
• https://github.com/mybb/mybb/security/advisories/GHSA-839m-gpw8-59j4
• https://mybb.com/versions/1.8.40