CVE-2023-43798 - CVE House
Back to Database
Status published Medium CVE-2023-43798

BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)

Vulnerability Description

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-43798

Credits & Attribution

No credits recorded in the NVD database.

References

More from bigbluebutton

View All →
CVE-2025-61602
BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId
High 7.5
CVE-2025-61601
BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation
High 7.5
CVE-2025-55200
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
High 7.1
CVE-2024-39302
Some bbb-record-core files installed with wrong file permission
Low 3.7
CVE-2024-38518
bbb-web API additional parameters considered
Medium 4.6

Affected Vendor

bigbluebutton

View all reports →

Affected Software

bigbluebutton
Vulnerable Versions:
< 2.6.12, >= 2.7.0-alpha.1, < 2.7.0-rc.1

Timeline

Official Publish: October 30th, 2023
Last Modified: September 5th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Weaknesses (CWE)

CWE-918

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1213 Data from Information Repositories
Collection
T1005 Data from Local System
Collection
T1046 Network Service Discovery
Discovery