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CVE-2026-45315

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the audio transcription upload endpoint takes the file extension from the user-supplied filename and saves the file under CACHE_DIR/audio/transcriptions/.. The /cache/{path} route serves these files via FileResponse, which sets Content-Type from the on-disk extension and emits no Content-Disposition. A verified user with the default-on chat.stt permission can upload a polyglot WAV+H
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b95450005422a77885f75946b5120814317576c2a6ec19286a418faf4859498c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-646","description":"CWE-646: Reliance on File Name or Extension of Externally-Supplied File","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":"< 0.9.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-646","description":"CWE-646: Reliance on File Name or Extension of Externally-Supplied File","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-m8f9-9whg-f4xr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-m8f9-9whg-f4xr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-m8f9-9whg-f4xr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:788902e725d27ddd8c5544680860455b9726e0fc6f991e0507ed9c4cb41bda04 · sha256:b8e8cf8655c307a3… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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