What is CVE-2023-48115?

CVE-2023-48115 is a medium-severity vulnerability in Smartertools Smartermail, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-12-21.

How severe is CVE-2023-48115?

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

XSS in Smartertools Smartermail

CVE-2023-48115

SmarterTools SmarterMail 8495 through 8664 before 8747 allows stored DOM XSS because an XSS protection mechanism is skipped when messageHTML and messagePlainText are set in the same request.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-12-21 · 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: 0.004 (26.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.7% 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

Smartertools Smartermail

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.smartertools.com/smartermail/release-notes/current (Release Notes)
co3us.gitbook.io/write-ups/stored-dom-xss-in-email-body-of-smartermail (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-48115?: CVE-2023-48115 is a medium-severity vulnerability in Smartertools Smartermail, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-12-21.
How severe is CVE-2023-48115?: Medium severity. CVSS v3 base score is 5.4 out of 10.