CVE-2020-15139

Katalog CVE

CVSS 6.1 · Medium EPSS 1,3%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada mybb. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

In MyBB before version 1.8.24, the custom MyCode (BBCode) for the visual editor doesn't escape input properly when rendering HTML, resulting in a DOM-based XSS vulnerability. The weakness can be exploited by pointing a victim to a page where the visual editor is active (e.g. as a post or Private Message) and operates on a maliciously crafted MyCode message. This may occur on pages where message content is pre-filled using a GET/POST parameter, or on reply pages where a previously saved malicious message is quoted. After upgrading MyBB to 1.8.24, make sure to update the version attribute in the `codebuttons` template for non-default themes to serve the latest version of the patched `jscripts/bbcodes_sceditor.js` file.

Rincian

Terbit di NVD

10 Agustus 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

1,3% peluang dieksploitasi; lebih tinggi dari 70,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://mybb.com/versions/1.8.24/ patch · advisory vendor
• https://github.com/mybb/mybb/commit/37ad29dcd25489a37bdd89ebac761f22492558b0 patch · advisory pihak ketiga
• https://github.com/mybb/mybb/security/advisories/GHSA-37h7-vfv6-f8rj patch · advisory pihak ketiga