CVE-2026-47733

Katalog CVE

CVSS 4.4 · Medium EPSS 0,18%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). Skor CVSS 3.1 4.4 (Medium) menurut github.com.

Deskripsi (NVD)

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into <a href> and <img src> attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses sanitizeUrl to block javascript:, data:, and vbscript: protocols — ImageElement passes the raw URL through unchanged. An authenticated user can post a markdown image with a javascript: URL that, if clicked on an older browser, would execute arbitrary JavaScript in the viewer's session. This vulnerability is fixed in 8.5.0.

Rincian

Terbit di NVD

24 Juni 2026

Terakhir diubah

25 Juni 2026

Status NVD

Deferred

CVSS 3.1

4.4 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:L/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)

0,18% peluang dieksploitasi; lebih tinggi dari 7,4% 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/RocketChat/Rocket.Chat/security/advisories/GHSA-vvrf-fq54-q4pr