CVE-2023-42803

HIGH EPSS 41.2%
Published Oct 30, 20232y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Oct 30, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
41.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

Affected Products 6

VendorProductVersionRange
bigbluebuttonbigbluebutton* ≤2.5.18
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any

References 2

  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/15990
    Third Party Advisory
  • github.com https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.