{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f5e2c68ba3f2fd7112d0e0334f41abdfce74e7d7"
            },
            {
              "fixed": "b59e35cb59ae52b66b072639382d98812b268488"
            }
          ],
          "repo": "https://github.com/pocket-id/pocket-id",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-9h33-g3ww-mqff"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28512.json"
  },
  "details": "Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed crafted redirect_uri values containing URL userinfo (@) to bypass legitimate callback pattern checks. If an attacker can trick a user into opening a malicious authorization link, the authorization code may be redirected to an attacker-controlled host. This vulnerability is fixed in 2.4.0.",
  "id": "CVE-2026-28512",
  "modified": "2026-04-01T23:09:43.342058136Z",
  "published": "2026-03-09T22:17:58.425Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28512.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pocket-id/pocket-id/security/advisories/GHSA-9h33-g3ww-mqff"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28512"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pocket-id/pocket-id/commit/3a339e33191c31b68bf57db907f800d9de5ffbc8"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pocket ID: OAuth redirect_uri validation bypass via userinfo/host confusion"
}