{"id":"CVE-2026-94621","summary":"AliasVault: Server-Side Request Forgery via DNS rebinding in Favicon Extraction","details":"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.","aliases":["GHSA-7hm6-fj4m-pf6f"],"modified":"2026-10-17T02:48:34.847857933Z","published":"2026-10-15T18:23:33.174Z","database_specific":{"cwe_ids":["CWE-367","CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94621.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/aliasvault/aliasvault/releases/tag/0.30.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94621.json"},{"type":"ADVISORY","url":"https://github.com/aliasvault/aliasvault/security/advisories/GHSA-7hm6-fj4m-pf6f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94621"},{"type":"FIX","url":"https://github.com/aliasvault/aliasvault/commit/7eb4fee71f4582cfc80b8daea421b99d6aa9f814"},{"type":"FIX","url":"https://github.com/aliasvault/aliasvault/commit/90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed"},{"type":"FIX","url":"https://github.com/aliasvault/aliasvault/pull/2311"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/aliasvault/aliasvault","events":[{"introduced":"0"},{"fixed":"7eb4fee71f4582cfc80b8daea421b99d6aa9f814"},{"fixed":"90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed"},{"fixed":"5e1b2ab929318691aa7bcb20798d4e8c11fabb38"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.30.3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["0.25.2","0.25.1","0.25.0","0.24.0","0.23.2","0.23.1","0.23.0","0.22.0","0.21.1","0.21.0","0.20.2","0.20.1","0.20.0","0.19.2","0.19.1","0.19.0","0.18.1","0.18.0","0.17.1","0.17.0","0.16.2","0.16.1","0.16.0","0.15.1","0.15.0","0.14.0","0.13.0","0.12.3","0.12.2","0.12.1","0.12.0","0.11.1","0.11.0","0.10.3","0.10.2","0.10.1","0.10.0","0.9.4","0.9.3","0.9.2","0.9.1","0.9.0","0.8.3","0.8.2","0.8.1","0.8.0","0.7.0","0.6.0","0.5.0","0.4.0","0.3.0","0.2.0","0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-94621.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}