{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.0.0-beta.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5a5f4a48ba18c004d4552cbee15d0e3e1f8ea371"
            }
          ],
          "repo": "https://github.com/wakujs/waku",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-43fc-v873-qw85"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49456.json"
  },
  "details": "Waku is the minimal React framework. Prior to version 1.0.0-beta.1, the unstable_redirect() helper exported from waku/router/server (packages/waku/src/router/define-router.tsx:156–161) accepts an arbitrary string and reflects it unchanged into the HTTP Location response header with no URL validation, scheme restriction, or path-only enforcement. Any application that passes user-controlled input to this helper — the natural pattern documented in the JSDoc and official fixtures — is vulnerable to open redirect attacks. An attacker who convinces a victim to click a crafted link can silently redirect the browser to an arbitrary external domain, enabling phishing, credential harvesting, and OAuth token theft. Additionally, scheme-relative URLs (//evil.example/) bypass naive https?://-only allow-list filters that developers might add as ad-hoc mitigations. This issue has been patched in version 1.0.0-beta.1.",
  "id": "CVE-2026-49456",
  "modified": "2026-09-05T03:30:48.026878694Z",
  "published": "2026-09-03T18:15:54.213Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wakujs/waku/releases/tag/v1.0.0-beta.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49456.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/wakujs/waku/security/advisories/GHSA-43fc-v873-qw85"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49456"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wakujs/waku/pull/2090"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Waku: Open Redirect via `unstable_redirect` Helper"
}