What is CVE-2022-37243?

CVE-2022-37243 is a medium-severity vulnerability in Altn Security Gateway For Email Servers, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-08-25.

How severe is CVE-2022-37243?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Altn Security Gateway For Email Servers

CVE-2022-37243

MDaemon Technologies SecurityGateway for Email Servers 8.5.2 is vulnerable to Cross Site Scripting (XSS) via the whitelist endpoint.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Altn Security Gateway For Email Servers — versions 8.5.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

files.mdaemon.com/securitygateway/release/relnotes_en.htm (Release Notes, Vendor Advisory)
gtn.com.np/wp-content/uploads/2022/07/Stored-Cross-Site-Scripting-XSS-at-whitel… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-37243?: CVE-2022-37243 is a medium-severity vulnerability in Altn Security Gateway For Email Servers, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-08-25.
How severe is CVE-2022-37243?: Medium severity. CVSS v3 base score is 5.4 out of 10.