{"id":"CVE-2026-109288","published":"2026-10-12T17:17:21.913","lastModified":"2026-10-13T20:39:48.767","description":"Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in MarkdownInlineTokens.svelte, which renders markdown link URLs into anchor hrefs without validating their scheme. Authenticated users can embed javascript: links in shared chats that, when clicked by a victim, steal the victim's JWT from local storage, including admins' tokens.","cvssScore":6.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6","tags":[]},{"url":"https://www.vulncheck.com/advisories/open-webui-before-0.11.4-stored-xss-via-javascript-urls-in-markdown-links","tags":[]},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6","tags":[]}],"exploitRefs":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6","tags":[]},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6","tags":[]}],"hasPoc":true,"ai":null}