CVE-2021-42085 Cross-site scripting in n/a
Attackers can inject malicious scripts via custom avatars in Zammad, 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-2021-42085?
CVE-2021-42085 is a medium-severity cross-site scripting vulnerability in Zammad Zammad, published on 7 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
An issue was discovered in Zammad before 4.1.1. There is stored XSS via a custom Avatar.
Weakness: CWE-79
Which versions are affected by CVE-2021-42085?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2021-42085?
No fix has been published for CVE-2021-42085 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-2021-42085 being exploited?
There is no known exploitation of CVE-2021-42085 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-7rhc-f2v9-mc93.