CVE-2020-18671 Cross-site scripting in n/a
Cross-site scripting in Roundcube Mail installer allows attackers to execute scripts via SMTP configuration, potentially compromising user accounts.
- 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
- Available
What is CVE-2020-18671?
CVE-2020-18671 is a medium-severity cross-site scripting vulnerability in Roundcube Webmail, published on 24 Jun 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
Cross Site Scripting (XSS) vulnerability in Roundcube Mail <=1.4.4 via smtp config in /installer/test.php.
Weakness: CWE-79
Which versions are affected by CVE-2020-18671?
1 open source package ship an affected version, including roundcube. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
roundcube Bitnami | All versions | 1.4.4 |
Products include Roundcube Webmail.
How do I fix CVE-2020-18671?
Upgrade roundcube to 1.4.4 or later.
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-2020-18671 being exploited?
There is no known exploitation of CVE-2020-18671 in the wild and no public exploit code.
Other vulnerabilities in Roundcube Webmail
Sources
Also known as BIT-roundcube-2020-18671, DEBIAN-CVE-2020-18671, GHSA-rxrc-3842-v7v6.