CVE-2021-27182 Cross-site scripting in n/a

High 8.8 Published 14 Apr 2021 Updated 3 Aug 2024

An IFRAME injection vulnerability in MDaemon Webmail allows attackers to perform actions with the victim's privileges via malicious email.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-27182?

CVE-2021-27182 is a high-severity cross-site scripting vulnerability in n/a, published on 14 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in MDaemon before 20.0.4. There is an IFRAME injection vulnerability in Webmail (aka WorldClient). It can be exploited via an email message. It allows an attacker to perform any action with the privileges of the attacked user.

Weakness: CWE-74

Which versions are affected by CVE-2021-27182?

It affects 1 product.

Products include Altn Mdaemon.

How do I fix CVE-2021-27182?

No fix has been published for CVE-2021-27182 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-2021-27182 being exploited?

There is no known exploitation of CVE-2021-27182 in the wild and no public exploit code.

Sources

Also known as GHSA-xqqm-w483-3fhq.