{"id":"CVE-2026-28512","state":"PUBLISHED","title":"Pocket ID: OAuth redirect_uri validation bypass via userinfo/host confusion","description":"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.","publishedAt":"2026-03-09T22:17:58.425Z","updatedAt":"2026-03-10T14:32:52.265Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["pocket-id pocket-id"],"affected":[{"vendor":"pocket-id","product":"pocket-id","versions":[{"version":">= 2.0.0, < 2.4.0","status":"affected"}]}],"references":["https://github.com/pocket-id/pocket-id/security/advisories/GHSA-9h33-g3ww-mqff","https://github.com/pocket-id/pocket-id/commit/3a339e33191c31b68bf57db907f800d9de5ffbc8"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28512.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28512","state":"PUBLISHED","datePublished":"2026-03-09T22:17:58.425Z","dateUpdated":"2026-03-10T14:32:52.265Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-27T20:57:47.710Z"},"containers":{"cna":{"title":"Pocket ID: OAuth redirect_uri validation bypass via userinfo/host confusion","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"pocket-id","product":"pocket-id","versions":[{"version":">= 2.0.0, < 2.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/pocket-id/pocket-id/security/advisories/GHSA-9h33-g3ww-mqff","name":"https://github.com/pocket-id/pocket-id/security/advisories/GHSA-9h33-g3ww-mqff","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pocket-id/pocket-id/commit/3a339e33191c31b68bf57db907f800d9de5ffbc8","name":"https://github.com/pocket-id/pocket-id/commit/3a339e33191c31b68bf57db907f800d9de5ffbc8","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-09T22:17:58.425Z"},"source":{"advisory":"GHSA-9h33-g3ww-mqff","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-10T14:32:45.368003Z","id":"CVE-2026-28512","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-10T14:32:52.265Z"}}]}}}