CVE-2008-4930 Cross-site scripting in n/a
Remote attackers can execute arbitrary scripts in victims' browsers via malicious file uploads, potentially leading to account takeover.
- 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-2008-4930?
CVE-2008-4930 is a medium-severity cross-site scripting vulnerability in Mybb Mybb, published on 4 Nov 2008. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type that contains HTML sequences, which allows remote attackers to cause that file to be processed as HTML by Internet Explorer's content inspection, aka "Incomplete protection against MIME-sniffing." NOTE: this could be leveraged for XSS and other attacks.
Weakness: CWE-20
Which versions are affected by CVE-2008-4930?
It affects 1 product.
Products include Mybb Mybb.
How do I fix CVE-2008-4930?
No fix has been published for CVE-2008-4930 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-2008-4930 being exploited?
There is no known exploitation of CVE-2008-4930 in the wild and no public exploit code.
Other vulnerabilities in Mybb Mybb
Sources
Also known as GHSA-m5jh-9fcq-22hm.