CVE-2021-39393 Cross-site scripting in n/a
An attacker can execute arbitrary scripts in the victim's browser via the markdown editor in mm-wiki.
- 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-2021-39393?
CVE-2021-39393 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 Aug 2022. 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
mm-wiki v0.2.1 was discovered to contain a cross-site scripting (XSS) vulnerability via the markdown editor.
Weakness: CWE-79
Which versions are affected by CVE-2021-39393?
It affects 1 product.
Products include Mm-Wiki Project Mm-Wiki.
How do I fix CVE-2021-39393?
No fix has been published for CVE-2021-39393 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-2021-39393 being exploited?
There is no known exploitation of CVE-2021-39393 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-vcjr-hpcg-vc53.