Improper Certificate Validation Affecting open-webui package, versions <0.11.3-r7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-WOLFILATEST-OPENWEBUI-20066565
- published24 Sept 2026
- disclosed22 Sept 2026
Introduced: 22 Sep 2026
NewCVE-2026-63374 (opens in a new tab)How to fix?
Upgrade Wolfi open-webui to version 0.11.3-r7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, connect_tcp() and TLSStream.wrap() can validate internationalized host names after the standard library converts them with IDNA 2003 instead of IDNA 2008. When a connection to a non-ASCII domain is hijacked or redirected, an attacker can obtain a legitimate certificate for the different ASCII hostname produced by IDNA 2003 and present it to the client, causing the malicious endpoint's certificate to validate. This issue is fixed in version 4.14.2.