Medium severity · published May 27, 2026
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…
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webmin · Webmin
before 2.640 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49102
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49102
github.com
https://github.com/webmin/webmin/commit/cf432879a14568c4bb44cd2f9e5a9bd0e168edc1
github.com
https://github.com/webmin/webmin/compare/2.630...2.640
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