What is CVE-2025-58596?

CVE-2025-58596 is a medium-severity vulnerability in Properfraction Mailoptin, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2025-09-03.

How severe is CVE-2025-58596?

Medium severity. CVSS v3 base score is 5.9 out of 10.

XSS in Properfraction Mailoptin

CVE-2025-58596

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in properfraction MailOptin mailoptin allows Stored XSS.This issue affects MailOptin: from n/a through <= 1.2.75.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (11.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

Affected products

Properfraction Mailoptin — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-58596?: CVE-2025-58596 is a medium-severity vulnerability in Properfraction Mailoptin, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2025-09-03.
How severe is CVE-2025-58596?: Medium severity. CVSS v3 base score is 5.9 out of 10.