CVE-2026-113728 (GCVE-0-2026-113728)
Vulnerability from cvelistv5
Published
2026-10-20 21:12
Modified
2026-10-27 13:28
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.9.2, the unauthenticated POST /api/fetch-ical endpoint validates a caller-supplied hostname with one DNS lookup and then passes the URL to fetch, which performs a separate lookup for the socket connection. An attacker controlling authoritative DNS can return a public address during validation and then rebind the hostname to a loopback, private, link-local, or cloud metadata address for the connection, causing the server to return up to 10 MB of an internal HTTP or HTTPS response. The same check-then-fetch pattern also existed in authenticated JMAP login and TOTP token-exchange flows. This issue is fixed in version 1.9.2.
Impacted products
Vendor Product Version
bulwarkmail webmail Version: < 1.9.2
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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