What is CVE-2026-49102?

CVE-2026-49102 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-27.

How severe is CVE-2026-49102?

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

XSS in Webmin

CVE-2026-49102

Webmin before 2.640 allows mailboxes/detach.cgi XSS via an SVG document attachment that is viewed in the mailboxes component, because image/svg+xml is used instead of a safe type (e.g., text/plain).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (9.5th percentile) — read the EPSS interpretation.

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.

Affected products

Webmin — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-49102?: CVE-2026-49102 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-27.
How severe is CVE-2026-49102?: Medium severity. CVSS v3 base score is 6.1 out of 10.