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CVE-2026-45316

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the POST /api/v1/notes/{id}/pin endpoint performs a write operation (toggling the is_pinned field) but only checks for read permission. Users with read-only access to a shared note can pin/unpin it, which is a state-modifying action that should require write permission. This vulnerability is fixed in 0.9.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:720802951b1c3cda167d14ebcaa8842af3c42b119efedfb3ebebb2f7f7cbd569
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":"< 0.9.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c325bebe210f01f938c08a195e0d046f50d2e6ae53699e2dea21c6b99f092e8e · sha256:30e069b827be38ed… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c325bebe210f01f938c08a195e0d046f50d2e6ae53699e2dea21c6b99f092e8e · sha256:30e069b827be38ed… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c325bebe210f01f938c08a195e0d046f50d2e6ae53699e2dea21c6b99f092e8e · sha256:30e069b827be38ed… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-jx2x-j75f-xq3j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c325bebe210f01f938c08a195e0d046f50d2e6ae53699e2dea21c6b99f092e8e · sha256:30e069b827be38ed… · /containers/adp/0/references/0
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-jx2x-j75f-xq3j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-jx2x-j75f-xq3j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c325bebe210f01f938c08a195e0d046f50d2e6ae53699e2dea21c6b99f092e8e · sha256:30e069b827be38ed… · /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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