What is CVE-2026-26930?

CVE-2026-26930 is a high-severity vulnerability in Smartertools Smartermail, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-02-16.

How severe is CVE-2026-26930?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Smartertools Smartermail

CVE-2026-26930

SmarterTools SmarterMail before 9526 allows XSS via MAPI requests.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Smartertools Smartermail — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.smartertools.com/smartermail/release-notes/current
www.smartertools.com/smartermail/release-notes

Frequently asked questions

What is CVE-2026-26930?: CVE-2026-26930 is a high-severity vulnerability in Smartertools Smartermail, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-02-16.
How severe is CVE-2026-26930?: High severity. CVSS v3 base score is 7.2 out of 10.