Cross-site Scripting (XSS) Affecting open-webui package, versions <0.8.12-r2
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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Start learning- Snyk IDSNYK-CHAINGUARDLATEST-OPENWEBUI-15882540
- published4 Apr 2026
- disclosed20 Mar 2026
Introduced: 20 Mar 2026
CVE-2026-33230 (opens in a new tab)How to fix?
Upgrade Chainguard open-webui to version 0.8.12-r2 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 Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, nltk.app.wordnet_app contains a reflected cross-site scripting issue in the lookup_... route. A crafted lookup_<payload> URL can inject arbitrary HTML/JavaScript into the response page because attacker-controlled word data is reflected into HTML without escaping. This impacts users running the local WordNet Browser server and can lead to script execution in the browser origin of that application. Commit 1c3f799607eeb088cab2491dcf806ae83c29ad8f fixes the issue.