MinorCritical vulnerability

CVE-2026-109288 (CVSS 7.2)

NVD · officialPublished Oct 12, 2026Risk 23/100

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.

Technical details

CVSS

7.2

AV:NetworkAC:LowPR:LowUI:Active

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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