CVE-2023-42803

—

CVSS 3.1

8.8 high

EPSS

<1%p44

Published

Oct 30, 2023 (Oct 30, 2023)

Modified

Jun 17, 2026

Description

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.

Vendors: bigbluebutton
Products: bigbluebutton
Weakness: CWE-434
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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