{"id":"CVE-2026-94621","published":"2026-10-15T19:17:49.410","lastModified":"2026-10-16T20:04:29.760","description":"AliasVault is a privacy-first password manager with built-in email aliasing. Prior to 0.30.3, the AliasVault server API favicon extractor validates a user-supplied hostname with a first DNS lookup but allows the HTTP client to perform a second DNS lookup when connecting. An authenticated low-privileged user operating an attacker-controlled authoritative DNS server can return a public address during validation and a private address during connection, causing a publicly reachable self-hosted server to issue HTTP or HTTPS requests to internal hosts. A valid image response is returned in Base64 form, while other responses can expose limited timing and error information for internal-network reconnaissance. Exploitation requires a publicly reachable self-hosted instance with public registration enabled, an authenticated AliasVault account, an attacker-controlled authoritative DNS server, and a resolver that permits rebinding; default checks limit requests to ports 80 and 443. The browser extensions, web application, and mobile applications are not affected. This issue is fixed in version 0.30.3.","cvssScore":6.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","cwes":["CWE-367","CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://github.com/aliasvault/aliasvault/commit/7eb4fee71f4582cfc80b8daea421b99d6aa9f814","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/commit/90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/pull/2311","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/releases/tag/0.30.3","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/security/advisories/GHSA-7hm6-fj4m-pf6f","tags":[]}],"exploitRefs":[{"url":"https://github.com/aliasvault/aliasvault/commit/7eb4fee71f4582cfc80b8daea421b99d6aa9f814","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/commit/90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/pull/2311","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/releases/tag/0.30.3","tags":[]},{"url":"https://github.com/aliasvault/aliasvault/security/advisories/GHSA-7hm6-fj4m-pf6f","tags":[]}],"hasPoc":true,"ai":null}