CVE-2026-109288
Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in…
- Risk score
- 41/100
- CVSS
- 6.4 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 12 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 l…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.11.4 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.4 medium
References
Original 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.
Last activity 12 Oct 2026. Patch Forecast updates every hour.