CVE-2026-27166

Katalog CVE

CVSS 5.4 · Medium EPSS 0,26%

Kerentanan Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) pada discourse. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

Discourse is an open source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1 and 2026.1.2, insufficient cleanup in the default Codepen allowed iframes value allows an attacker to trick a user into changing the URL of the main page. This issue has been fixed in versions 2026.3.0-latest.1, 2026.2.1 and 2026.1.2. To workaround this issue, remove Codepen from the list of allowed iframes.

Rincian

Terbit di NVD

19 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 16,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/discourse/discourse/security/advisories/GHSA-h653-cq78-vjj2 advisory vendor
• https://github.com/discourse/discourse/commit/c4762a4fac2f61f52f325396b11d3aeb955ea925 patch