XSS in Blindsidenetworks Bigbluebutton

CVE-2023-7296

The BigBlueButton plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the moderator code and viewer code fields in versions up to, and including, 3.0.0-beta.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with author privileges or higher to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (21.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-7296?
CVE-2023-7296 is a medium-severity vulnerability in Blindsidenetworks Bigbluebutton, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-10-16.
How severe is CVE-2023-7296?
Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2023-7296 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.