CVE Explorer

CVE-2026-45385

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, an IDOR vulnerability exists in the Channels feature of Open WebUI, allowing any channel member to modify messages sent by other members (including administrators) within the same channel. In the update_message_by_id function, for group or dm type channels, only the caller's membership in the channel is checked via the is_user_channel_member function, without verifying message owner

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5cc902e4e9d4a5ee6de311d4f43324b66a605858dd1f10e4a60b849a51b29cd6

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":"< 0.9.5"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8f4629dc49d5d8e844294566575cb4648c124f62dc40c50e14a48292a52c370b · sha256:df93f630e5a2d162… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:8f4629dc49d5d8e844294566575cb4648c124f62dc40c50e14a48292a52c370b · sha256:df93f630e5a2d162… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:8f4629dc49d5d8e844294566575cb4648c124f62dc40c50e14a48292a52c370b · sha256:df93f630e5a2d162… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wwhq-cx22-f7vv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wwhq-cx22-f7vv"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8f4629dc49d5d8e844294566575cb4648c124f62dc40c50e14a48292a52c370b · sha256:df93f630e5a2d162… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wwhq-cx22-f7vv"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8f4629dc49d5d8e844294566575cb4648c124f62dc40c50e14a48292a52c370b · sha256:df93f630e5a2d162… · /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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