CVE-2023-7296 BigBlueButton <= 3.0.0-beta.4 - Authenticated (Author+) Stored Cross-Site Scripting
Authenticated attackers with author privileges can inject arbitrary scripts via moderator and viewer code fields, potentially executing code in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-7296?
CVE-2023-7296 is a medium-severity cross-site scripting vulnerability in blindsidenetworks BigBlueButton, published on 16 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2023-7296?
How do I fix CVE-2023-7296?
No fix has been published for CVE-2023-7296 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-7296 being exploited?
There is no known exploitation of CVE-2023-7296 in the wild and no public exploit code.
Sources
Also known as GHSA-cxgh-hg8w-qcg5.