CVE-2022-26497 Cross-site scripting in n/a
Attackers can execute arbitrary JavaScript in victims' browsers via malicious usernames in the share room dialog, potentially leading to session hijacking.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-26497?
CVE-2022-26497 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Jun 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
BigBlueButton Greenlight 2.11.1 allows XSS. A threat actor could have a username containing a JavaScript payload. The payload gets executed in the browser of the victim in the "Share room access" dialog if the victim has shared access to the particular room with the attacker previously.
Weakness: CWE-79
Which versions are affected by CVE-2022-26497?
It affects 1 product.
Products include Bigbluebutton Greenlight.
How do I fix CVE-2022-26497?
No fix has been published for CVE-2022-26497 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-2022-26497 being exploited?
There is no known exploitation of CVE-2022-26497 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2022-36028 BigBlueButton Greenlight Open Redirect vulnerability
- CVE-2022-36029 BigBlueButton Greenlight Open Redirect vulnerability
- CVE-2020-26163 Open redirect in n/a
- CVE-2020-27642 Cross-site scripting in n/a
- CVE-2022-31039 Improper privilege management - Anyone can view room settings in GreenLight
Sources
Also known as GHSA-w3cv-3c36-h8j2.