XSS in Webmin
CVE-2026-124552
Webmin through 2.670 contains a stored cross-site scripting vulnerability in the Shorewall and Shorewall6 modules' list.cgi, which renders table fields and COMMENT lines unescaped. Authenticated users with table edit permission can store JavaScript via savecmt.cgi or table entries that executes when other users, including root, view the list page.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/webmin/webmin (product)
- github.com/webmin/webmin/blob/2.670/shorewall/list.cgi (technical-description)
- github.com/webmin/webmin/blob/2.670/shorewall6/list.cgi (technical-description)
- github.com/webmin/webmin/commit/01b988dbf1e8f9926eec4b041d913167e0cc280f (patch)
- GitHub Issue #2908 (issue-tracking)
- VulnCheck Advisory: Webmin through 2.670 Stored XSS via Shorewall and Shorewall6 list.cgi (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124552?
- CVE-2026-124552 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-11-08.
- How severe is CVE-2026-124552?
- Medium severity. CVSS v3 base score is 4.8 out of 10.