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CVE-2026-45398

🗓️ 15 May 2026 20:35:35Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 57 Views🌐 WEB

Authenticated users can read and overwrite private knowledge bases via retrieval and write endpoints in Open WebUI before 0.9.5.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
[
  {
    "vendor": "open-webui",
    "product": "open-webui",
    "versions": [
      {
        "version": "< 0.9.5",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
knowledge_base_uuidrequest body/process/textAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
contentrequest body/process/textAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
knowledge_base_uuidrequest body/process/fileAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
contentrequest body/process/fileAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
knowledge_base_uuidrequest body/process/files/batchAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
contentrequest body/process/files/batchAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
knowledge_base_uuidrequest body/process/webAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
contentrequest body/process/webAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
knowledge_base_uuidrequest body/process/youtubeAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
contentrequest body/process/youtubeAuthenticated user with knowledge of a private knowledge base UUID can read and inject/overwrite content via the retrieval/write endpoint due to insufficient validation of knowledge base collection prefixes (CWE-639).CWE-639
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17 Jun 2026 10:52Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
EPSS0.00331
SSVC
57