CVE-2026-45398
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
Open WebUI Vulnerable to IDOR: Retrieval API Bypasses Knowledge Base Access Controls
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | open-webui | <0.9.5 | 0.9.5 |
| PIP | open-webui | <= 0.9.4 | 0.9.5 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openwebui | open_webui | {"endExcluding":"0.9.5"} | 0.9.5 |
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-4g37-7p2c-38r9
- https://nvd.nist.gov/vuln/detail/CVE-2026-45398
- https://github.com/open-webui/open-webui/pull/22109
- https://github.com/open-webui/open-webui
- https://github.com/open-webui/open-webui/releases/tag/v0.9.5
- https://github.com/advisories/GHSA-4g37-7p2c-38r9
CWEs
CWE-639
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.