What is CVE-2023-4594?

CVE-2023-4594 is a medium-severity vulnerability in Bvrp Software Slmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-11-23.

How severe is CVE-2023-4594?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Bvrp Software Slmail

CVE-2023-4594

Stored XSS vulnerability. This vulnerability could allow an attacker to store a malicious JavaScript payload via GET and POST methods on multiple parameters in the MailAdmin_dll.htm file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-11-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.3% 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

Bvrp Software Slmail — versions 5.5.0.4433
Microsoft Windows
Seattlelab Slmail — versions 5.5.0.4433

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-bvrp-softwa… (Third Party Advisory)

Frequently asked questions

What is CVE-2023-4594?: CVE-2023-4594 is a medium-severity vulnerability in Bvrp Software Slmail, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-11-23.
How severe is CVE-2023-4594?: Medium severity. CVSS v3 base score is 6.1 out of 10.