{"id":"CVE-2026-55834","summary":"Pocket ID: Open Redirect on the OIDC /authorize page via unvalidated redirect_uri with prompt=none","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.","aliases":["GHSA-2wvm-8mvp-22qv"],"modified":"2026-08-30T03:46:58.641151593Z","published":"2026-08-28T16:27:58.324Z","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"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pocket-id/pocket-id","events":[{"introduced":"0d40bf29ab4f453602af42ce08d3171c7019f74a"},{"fixed":"8a7577497131229badb35cb4b3a4227b1300afff"},{"fixed":"49cb131b7de6348adf9c0d742e1c0cee58dcb37d"}],"database_specific":{"extracted_events":[{"introduced":"2.6.0"},{"fixed":"2.9.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v2.8.0","v2.7.0","v2.6.2","v2.6.1","v2.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55834.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}