{"api_version":"1","generated_at":"2026-08-05T03:44:44+00:00","cve":"CVE-2026-70487","urls":{"html":"https://cve.report/CVE-2026-70487","api":"https://cve.report/api/cve/CVE-2026-70487.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-70487","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-70487"},"summary":{"title":"Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata","description":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-08-04 21:16:37","updated_at":"2026-08-04 21:16:37"},"problem_types":["CWE-862","CWE-862 CWE-862: Missing Authorization"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/open-webui/open-webui/commit/305880f2e2aeb2dda2f4b2a18a20bdcd558f7134","name":"https://github.com/open-webui/open-webui/commit/305880f2e2aeb2dda2f4b2a18a20bdcd558f7134","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-6xhv-rxhv-pwm4","name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-6xhv-rxhv-pwm4","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0","name":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-70487","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70487","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"open-webui","product":"open-webui","version":"affected >= 0.8.8, < 0.11.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":">= 0.8.8, < 0.11.0"}]}],"descriptions":[{"lang":"en","value":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-04T20:16:36.228Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-6xhv-rxhv-pwm4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-6xhv-rxhv-pwm4"},{"name":"https://github.com/open-webui/open-webui/commit/305880f2e2aeb2dda2f4b2a18a20bdcd558f7134","tags":["x_refsource_MISC"],"url":"https://github.com/open-webui/open-webui/commit/305880f2e2aeb2dda2f4b2a18a20bdcd558f7134"},{"name":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0","tags":["x_refsource_MISC"],"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0"}],"source":{"advisory":"GHSA-6xhv-rxhv-pwm4","discovery":"UNKNOWN"},"title":"Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-70487","datePublished":"2026-08-04T20:16:11.523Z","dateReserved":"2026-08-04T15:24:41.340Z","dateUpdated":"2026-08-04T20:16:36.228Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-04 21:16:37","lastModifiedDate":"2026-08-04 21:16:37","problem_types":["CWE-862","CWE-862 CWE-862: Missing Authorization"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"70487","Ordinal":"1","Title":"Open WebUI: Cross-user file content disclosure via request-scope","CVE":"CVE-2026-70487","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"70487","Ordinal":"1","NoteData":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0.","Type":"Description","Title":"Open WebUI: Cross-user file content disclosure via request-scope"}]}}}