{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.6.0"
              },
              {
                "fixed": "2.9.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0d40bf29ab4f453602af42ce08d3171c7019f74a"
            },
            {
              "fixed": "8a7577497131229badb35cb4b3a4227b1300afff"
            },
            {
              "fixed": "49cb131b7de6348adf9c0d742e1c0cee58dcb37d"
            }
          ],
          "repo": "https://github.com/pocket-id/pocket-id",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2wvm-8mvp-22qv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55834.json"
  },
  "details": "Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to services. From 2.6.0 until 2.9.0, frontend/src/routes/authorize/+page.ts reads the redirect_uri query parameter and frontend/src/routes/authorize/+page.svelte uses the raw callbackURL in redirectWithError when prompt=none cannot complete silent authorization. The client-side path only blocks javascript and data schemes and does not invoke the backend callback allow-list validation, so an unauthenticated attacker who knows a valid client_id can redirect a victim browser to an arbitrary HTTP or HTTPS origin for phishing or OIDC error and state smuggling. This issue is fixed in version 2.9.0.",
  "id": "CVE-2026-55834",
  "modified": "2026-08-30T03:30:47.405383821Z",
  "published": "2026-08-28T16:27:58.324Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pocket-id/pocket-id/releases/tag/v2.9.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55834.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pocket-id/pocket-id/security/advisories/GHSA-2wvm-8mvp-22qv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55834"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pocket-id/pocket-id/commit/8a7577497131229badb35cb4b3a4227b1300afff"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pocket ID: Open Redirect on the OIDC /authorize page via unvalidated redirect_uri with prompt=none"
}