CVE-2021-29399 Cross-site scripting in n/a
Attackers can inject malicious scripts via BBCode input in XMB forum software, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-29399?
CVE-2021-29399 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
XMB is vulnerable to cross-site scripting (XSS) due to inadequate filtering of BBCode input. This bug affects all versions of XMB. All XMB installations must be updated to versions 1.9.12.03 or 1.9.11.16.
Weakness: CWE-79
Which versions are affected by CVE-2021-29399?
It affects 1 product.
Products include Xmbforum2 Xmb.
How do I fix CVE-2021-29399?
No fix has been published for CVE-2021-29399 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-2021-29399 being exploited?
There is no known exploitation of CVE-2021-29399 in the wild and no public exploit code.
Sources
Also known as GHSA-994w-cp3m-8qh7.