CVE-2026-47245

Katalog CVE

CVSS 4.3 · Medium EPSS 0,37%

Kerentanan Unchecked Return Value. 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 User CP Buddy/Ignore List component does not validate reciprocal buddy-list updates correctly. The usercp.php?action=do_editlists delete handler removes the selected entry from the acting user's list and then updates mybb_users.buddylist for the target account. The reciprocal update searches for the deleted target UID instead of the acting user's UID and uses the unchecked array_search() return value as an array key. A false result can be converted to index 0, removing the target account's first stored buddy while leaving the actual reciprocal entry unchanged. The uniquely identifying implementation details include false converted to index 0. 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-252: Unchecked Return Value

EPSS (30 hari)

0,37% peluang dieksploitasi; lebih tinggi dari 28,6% 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/0557718f27503034fb1c2768729a2fb8239bba65
• https://github.com/mybb/mybb/releases/tag/mybb_1840
• https://github.com/mybb/mybb/security/advisories/GHSA-w8gm-j57p-jqpc
• https://mybb.com/versions/1.8.40