CVE Explorer
CVE-2026-44559
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/{id}/members endpoint only checks membership for group and dm channel types (lines 467-469). For standard channels — including private ones — there is no channel_has_access check before returning the member list. Any authenticated user who knows a private channel's UUID can enumerate all users with access to that channel. This vulnerability is fixed in 0.9.0
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":"< 0.9.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a29677c76a2f4cc3107e658de6ee846520e5b23731219d9b8cac8dc52bcc4f1c · sha256:ebe6e50041a2fc42… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a29677c76a2f4cc3107e658de6ee846520e5b23731219d9b8cac8dc52bcc4f1c · sha256:ebe6e50041a2fc42… · /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_v5cweurn:baitaphish:normalized-source-record:v2:a29677c76a2f4cc3107e658de6ee846520e5b23731219d9b8cac8dc52bcc4f1c · sha256:ebe6e50041a2fc42… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-c7wp-3qh5-55pv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a29677c76a2f4cc3107e658de6ee846520e5b23731219d9b8cac8dc52bcc4f1c · sha256:ebe6e50041a2fc42… · /containers/adp/0/references/0
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-c7wp-3qh5-55pv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-c7wp-3qh5-55pv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a29677c76a2f4cc3107e658de6ee846520e5b23731219d9b8cac8dc52bcc4f1c · sha256:ebe6e50041a2fc42… · /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.