Medium

AliasVault: Server-Side Request Forgery via DNS rebinding in Favicon Extraction

Type: advisorySources: OSV

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.

Products: Not specified
Affected versions: Not specified
Fixed versions: Not specified
CVEs: CVE-2026-94621
Confirmed fixed CVEs: Not specified
Updated in this feed: 8 Nov 2026, 01:30 UTC · Revision 1

Source evidence

AliasVault: Server-Side Request Forgery via DNS rebinding in Favicon Extraction

core-osv · Original source

Published 15 Oct 2026, 18:23 UTC

osv:CVE-2026-94621

Complete source record

{
  "id": "620bee023d475dc091fb61c166e034a44b5cb4b4775989db4138d1d5a412b9c3",
  "url": "https://osv.dev/vulnerability/CVE-2026-94621",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "AliasVault: Server-Side Request Forgery via DNS rebinding in Favicon Extraction",
    "summary": "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.",
    "evidence": "osv:CVE-2026-94621",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-94621",
      "aliases": [
        "CVE-2026-94621",
        "GHSA-7hm6-fj4m-pf6f"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/aliasvault/aliasvault",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5e1b2ab929318691aa7bcb20798d4e8c11fabb38"
                },
                {
                  "fixed": "7eb4fee71f4582cfc80b8daea421b99d6aa9f814"
                },
                {
                  "fixed": "90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.30.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7eb4fee71f4582cfc80b8daea421b99d6aa9f814"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5e1b2ab929318691aa7bcb20798d4e8c11fabb38"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.30.3"
                  }
                ]
              }
            }
          ],
          "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"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.375625999Z",
      "provider": "osv",
      "references": [
        "https://github.com/aliasvault/aliasvault/releases/tag/0.30.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94621.json",
        "https://github.com/aliasvault/aliasvault/security/advisories/GHSA-7hm6-fj4m-pf6f",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-94621",
        "https://github.com/aliasvault/aliasvault/commit/7eb4fee71f4582cfc80b8daea421b99d6aa9f814",
        "https://github.com/aliasvault/aliasvault/commit/90ea7d6bb4c74ca169ee1dde3ca38b08bd0966ed",
        "https://github.com/aliasvault/aliasvault/pull/2311"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-367",
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94621.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-94621",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521361,
  "published_at": "2026-10-15T18:23:33.174+00:00"
}