CVE-2026-27736: bigbluebutton

csirt@kutim:~/threat-intel/cve/CVE-2026-27736

CVSS 6.1 · Medium EPSS 0,26%

Kerentanan URL Redirection to Untrusted Site ('Open Redirect') pada bigbluebutton. Skor CVSS 3.1 6.1 (Medium) menurut github.com.

Deskripsi (NVD)

BigBlueButton is an open-source virtual classroom. In versions on the 3.x branch prior to 3.0.20, the string received with errorRedirectUrl lacks validation, using it directly in the respondWithRedirect function leads to an Open Redirect vulnerability. BigBlueButton 3.0.20 patches the issue. No known workarounds are available.

Rincian

Terbit di NVD: 25 Februari 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.1 (Medium), sumber github.com
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-601: URL Redirection to Untrusted Site ('Open Redirect')
EPSS (30 hari): 0,26% peluang dieksploitasi; lebih tinggi dari 16,2% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
bigbluebutton	bigbluebutton	Semua versi sebelum 3.0.20

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-65cv-rg9f-qqrx patch · advisory vendor
https://github.com/bigbluebutton/bigbluebutton/commit/691f92f3af0d6b796b91cb968977068663119812 patch

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.