CVE-2020-18724

Name: CVE-2020-18724
Creator: NVD / NIST
Published: 2021-02-03T18:15:16.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 3.19%

Last modified Jun 17, 2026

CVE-2020-18724 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Authenticated stored cross-site scripting (XSS) in the contact name field in the distribution list of MDaemon webmail 19.5.5 allows an attacker to executes code and perform a XSS attack while opening a contact list.. EPSS estimates a 3.19% chance of exploitation in the next 30 days.

Description

Authenticated stored cross-site scripting (XSS) in the contact name field in the distribution list of MDaemon webmail 19.5.5 allows an attacker to executes code and perform a XSS attack while opening a contact list.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

3.19%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Altn	Mdaemon Webmail	< 20.0.1

References

http://kailashbohara.com.np/blog/2020/07/15/mdaemon-stored-xssExploit, Third Party Advisory
http://packetstormsecurity.com/files/161332/Alt-N-MDaemon-Webmail-20.0.0-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://www.altn.com/Support/SecurityUpdate/MD082520_MDaemon_EN/Vendor Advisory
http://kailashbohara.com.np/blog/2020/07/15/mdaemon-stored-xssExploit, Third Party Advisory
http://packetstormsecurity.com/files/161332/Alt-N-MDaemon-Webmail-20.0.0-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://www.altn.com/Support/SecurityUpdate/MD082520_MDaemon_EN/Vendor Advisory

Timeline

Published: Feb 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18724?

How severe is CVE-2020-18724?

CVE-2020-18724 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 3.19% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18724?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18724?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST