CVE-2020-21434 Cross-site scripting in n/a
Attackers can inject malicious scripts via the nickname field in the Member module, potentially leading to session hijacking or code execution.
- 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-2020-21434?
CVE-2020-21434 is a medium-severity cross-site scripting vulnerability in n/a, published on 4 Oct 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
Maccms 10 contains a cross-site scripting (XSS) vulnerability in the Editing function under the Member module. This vulnerability is exploited via a crafted payload in the nickname text field.
Weakness: CWE-79
Which versions are affected by CVE-2020-21434?
It affects 1 product.
Products include Maccms Maccms.
How do I fix CVE-2020-21434?
No fix has been published for CVE-2020-21434 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-2020-21434 being exploited?
There is no known exploitation of CVE-2020-21434 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-6q4r-96qj-749p.