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).
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49102.json",
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "mitre"
}