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CVE-2026-45350

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, there is a vulnerability in chat completion API, which allows attackers to bypass tool restrictions, potentially enabling unauthorized actions or access. In the chat_completion API, the parameters tool_ids and tool_servers are supplied by the user. These parameters are used to create a tools_dict by the middleware. This is then used by get_tool_by_id to retrieve the appropriate tool
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2fb3e7e692f82d81e3a726875206498d2bb8171a70f93eed6c036486ffe845da
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":"< 0.8.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f38160c0ad7e612efe110af6e46fb215a0fc99c933fefe11196e42e45e361d30 · sha256:e5cace4d95d30ff4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f38160c0ad7e612efe110af6e46fb215a0fc99c933fefe11196e42e45e361d30 · sha256:e5cace4d95d30ff4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f38160c0ad7e612efe110af6e46fb215a0fc99c933fefe11196e42e45e361d30 · sha256:e5cace4d95d30ff4… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-4pcg-253r-rf9w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f38160c0ad7e612efe110af6e46fb215a0fc99c933fefe11196e42e45e361d30 · sha256:e5cace4d95d30ff4… · /containers/adp/0/references/0
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-4pcg-253r-rf9w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-4pcg-253r-rf9w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f38160c0ad7e612efe110af6e46fb215a0fc99c933fefe11196e42e45e361d30 · sha256:e5cace4d95d30ff4… · /containers/cna/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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