CVE-2023-42803

MEDIUM

BigBlueButton < 2.6.0-beta.2 - Unrestricted File Upload via insertDocument API

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/15990

Scores

CVSS v3 5.3
EPSS 0.0054
EPSS Percentile 41.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-434
Status published
Products (2)
bigbluebutton/bigbluebutton 2.6.0 alpha1 (5 CPE variants)
bigbluebutton/bigbluebutton < 2.5.18
Published Oct 30, 2023
Tracked Since Feb 18, 2026