{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55834", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-17T16:29:38.865Z", "datePublished": "2026-08-28T16:27:58.324Z", "dateUpdated": "2026-08-28T20:28:38.924Z"}, "containers": {"cna": {"title": "Pocket ID: Open Redirect on the OIDC /authorize page via unvalidated redirect_uri with prompt=none", "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/pocket-id/pocket-id/security/advisories/GHSA-2wvm-8mvp-22qv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pocket-id/pocket-id/security/advisories/GHSA-2wvm-8mvp-22qv"}, {"name": "https://github.com/pocket-id/pocket-id/commit/8a7577497131229badb35cb4b3a4227b1300afff", "tags": ["x_refsource_MISC"], "url": "https://github.com/pocket-id/pocket-id/commit/8a7577497131229badb35cb4b3a4227b1300afff"}, {"name": "https://github.com/pocket-id/pocket-id/releases/tag/v2.9.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/pocket-id/pocket-id/releases/tag/v2.9.0"}], "affected": [{"vendor": "pocket-id", "product": "pocket-id", "versions": [{"version": ">= 2.6.0, < 2.9.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-28T16:27:58.324Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-2wvm-8mvp-22qv", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/pocket-id/pocket-id/security/advisories/GHSA-2wvm-8mvp-22qv", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-28T20:27:55.433241Z", "id": "CVE-2026-55834", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-28T20:28:38.924Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.6.0,2.9.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pocket-id", "source": "cna", "vendor": "pocket-id"}, "product": "pocket-id", "vendor": "pocket-id"}], "created": "2026-08-28T21:30:05.387631+00:00", "updated": "2026-08-28T22:30:17.389820+00:00", "vendors": ["pocket-id", "pocket-id$PRODUCT$pocket-id"]}