CVE-2026-55491

Katalog CVE

CVSS 5.4 · Medium EPSS 0,29%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). Skor CVSS 3.1 5.4 (Medium) menurut github.com.

Deskripsi (NVD)

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName in record-and-playback/screenshare/playback/index.html.erb when generating the screenshare playback format. A low-privileged user could store a crafted meeting name that embedded script content, and the script executed in another user's browser when that user replayed the recording. This issue is fixed in version 3.0.29.

Rincian

Terbit di NVD

20 Agustus 2026

Terakhir diubah

16 September 2026

Status NVD

Deferred

CVSS 3.1

5.4 (Medium), sumber github.com
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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

0,29% peluang dieksploitasi; lebih tinggi dari 19,8% 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/bigbluebutton/bigbluebutton/commit/a53f2b92022388bfa4109d3136d1f3a932404b1b
• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v3.0.29
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-57p5-c888-74f9