What is CVE-2020-12670?

CVE-2020-12670 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-12.

How severe is CVE-2020-12670?

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

Is CVE-2020-12670 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Webmin

CVE-2020-12670

XSS exists in Webmin 1.941 and earlier affecting the Save function of the Read User Email Module / mailboxes Endpoint when attempting to save HTML emails. This module parses any output without sanitizing SCRIPT elements, as opposed to the View function, which sanitizes the input correctly. A malicious user can send any JavaScript payload into the message body and execute it if the user decides to save that email.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (48.9th 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
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

MauroEldritch/mauroeldritch

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-12670?: CVE-2020-12670 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-12.
How severe is CVE-2020-12670?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-12670 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.