CVE-2021-28968 Cross-site scripting in n/a
Authenticated users can inject arbitrary JavaScript into forum messages via the email BBcode tag, potentially leading to session hijacking or malicious actions.
- 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-2021-28968?
CVE-2021-28968 is a medium-severity cross-site scripting vulnerability in n/a, published on 22 Mar 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An issue was discovered in PunBB before 1.4.6. An XSS vulnerability in the [email] BBcode tag allows (with authentication) injecting arbitrary JavaScript into any forum message.
Weakness: CWE-79
Which versions are affected by CVE-2021-28968?
It affects 1 product.
Products include Gnu Punbb.
How do I fix CVE-2021-28968?
No fix has been published for CVE-2021-28968 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-2021-28968 being exploited?
There is no known exploitation of CVE-2021-28968 in the wild and no public exploit code.
Sources
Also known as GHSA-8grx-rjm9-f6qq.