What is CVE-2023-52269?

CVE-2023-52269 is a medium-severity vulnerability in Mdaemon Securitygateway, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-12-31.

How severe is CVE-2023-52269?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Mdaemon Securitygateway

CVE-2023-52269

MDaemon SecurityGateway through 9.0.3 allows XSS via a crafted Message Content Filtering rule. This might allow domain administrators to conduct attacks against global administrators.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Mdaemon Securitygateway

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/vipercalling/XSSsecurityGateway/blob/main/finding (Exploit, Third Party Advisory)
mdaemon.com/pages/security-gateway (Product)

Frequently asked questions

What is CVE-2023-52269?: CVE-2023-52269 is a medium-severity vulnerability in Mdaemon Securitygateway, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-12-31.
How severe is CVE-2023-52269?: Medium severity. CVSS v3 base score is 4.8 out of 10.