Is CVE-2023-42803 actively exploited?

CVE-2023-42803 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2023-42803?

CVE-2023-42803 has a CVSS score of 5.3 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2023-42803?

Patch guidance is available from bigbluebutton security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-42803.

CVE-2023-42803 - remediation guidance & executive summary

Q: Which products are affected by CVE-2023-42803?

6 products: bigbluebutton bigbluebutton, bigbluebutton bigbluebutton, bigbluebutton bigbluebutton, bigbluebutton bigbluebutton, bigbluebutton bigbluebutton, and 1 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-434 · Unrestricted File Upload

Metadata

Primary Vendor: BIGBLUEBUTTON
Published: 10/30/2023
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

bigbluebutton : bigbluebuttonbigbluebutton : bigbluebuttonbigbluebutton : bigbluebuttonbigbluebutton : bigbluebuttonbigbluebutton : bigbluebuttonbigbluebutton : bigbluebutton

Remediation Guidance

Executive Summary

Cite this page

CVE-2023-42803. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-42803

View on NIST NVD

CVE-2023-42803 vulnerability