CVE-2026-109288

6.4 MEDIUMpublic exploit available

Published 2026-10-12 · Updated 2026-10-13

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Weaknesses

CWE-79

Public exploit & PoC references

https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6
https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6

All references

https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6
https://www.vulncheck.com/advisories/open-webui-before-0.11.4-stored-xss-via-javascript-urls-in-markdown-links
https://github.com/open-webui/open-webui/security/advisories/GHSA-wf9m-46cp-c6h6

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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