renderMermaidDiagram returned raw mermaid SVG, which FilePreview.svelte injects
via wrapper.innerHTML = svg. Mermaid runs with securityLevel: 'loose', so it
neither sanitizes click hrefs (formatUrl skips sanitizeUrl) nor DOMPurifies its
output; a .md file with a click X href "javascript:..." directive (or an
HTML-label payload) therefore executes script in the app origin when previewed.
The chat path was already safe because SVGPanZoom DOMPurifies before rendering;
file preview was not.
Sanitize at the source: renderMermaidDiagram now returns DOMPurify-cleaned SVG
via a shared sanitizeSvg helper (same policy as SVGPanZoom), so every consumer
including the FilePreview innerHTML sink receives safe output.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Adds an IFRAME_CSP environment variable that injects a Content-Security-Policy
<meta> tag into all srcdoc iframes rendering untrusted content:
- Artifacts (LLM-generated HTML previews)
- FullHeightIframe (tool/embed output)
- FilePreview (user-uploaded HTML files)
- CitationModal (RAG document HTML)
Shared utility in src/lib/utils/csp.ts handles injection with HTML-safe
attribute escaping. URL-based iframes (src=) are correctly excluded.
Env-var only — no PersistentConfig, no admin UI, no DB. Set once at deploy
time, requires restart. Empty string (default) means no CSP restriction.
* refac(routers): reject external URLs in profile/model image handlers
* refac(ui): centralize image URL validation in safeImageUrl helper
* refac(auths): make signout POST-only
* refac: gate external profile image redirect behind ENABLE_PROFILE_IMAGE_URL_FORWARDING
Restore the 302 redirect for external http(s) profile image URLs in
the user and model profile-image endpoints, but gate it behind a new
ENABLE_PROFILE_IMAGE_URL_FORWARDING env flag (default: True).
Existing deployments that rely on external profile image forwarding
continue to work unchanged. Operators who want to suppress the
redirect (to prevent client-side IP/UA/Referer leaks) can set the
flag to False.
The previous regular expression used manual surrogate-pair ranges to
match emojis and missed a large category of commonly used symbols:
/[\uD800-\uDBFF][\uDC00-\uDFFF]|\uD83C[\uDC00-\uDFFF]|\uD83D[\uDC00-\uDE4F]/g
This approach only covers emojis encoded as surrogate pairs (U+1F000 –
U+1F4FF range), but silently skips BMP emojis that use a text-
presentation code point followed by the variation selector U+FE0F,
such as ❤️ (U+2764 U+FE0F), ☀️, ✅, ⚡, ⭐, and keycap sequences
like 1️⃣, as well as ZWJ family sequences (👨👩👧👦) and flag sequences.
Replace with the Unicode property escape \p{RGI_Emoji} using the 'v'
(unicodeSets) flag introduced in ES2024. This single pattern covers
every standardised emoji sequence defined by Unicode, including all
the cases above.
Browser support: Chrome 112+, Firefox 116+, Safari 17+, Node.js 20+.
All browsers targeted by open-webui already support this syntax.
Co-authored-by: Tim Baek <tim@openwebui.com>
Co-authored-by: joaoback <156559121+joaoback@users.noreply.github.com>
Co-authored-by: yoloni <yoloni@tencent.com>
getTimeRange returns month names that are used as i18n translation keys
(consumed via \.t(chat.time_range) in the sidebar, search modal, etc.).
The keys must be exact English strings like 'January', 'February', etc.
Previously, toLocaleString('default', { month: 'long' }) was used to
generate these keys. The 'default' locale defers to the browser's locale
resolution, which in Firefox with intl.regional_prefs.use_os_locales=true
picks up OS regional settings instead of the browser language. This caused
German month names (e.g. 'Februar', 'Januar') to appear in the sidebar for
users whose OS region is set to Germany, even when both browser and app
language are set to English. Chrome was unaffected because it ignores OS
regional settings for the 'default' locale.
Since i18n has no translation key for 'Februar', the German string passed
through untranslated. Replace toLocaleString with a static MONTH_NAMES
array lookup to make the intent explicit and eliminate any browser/OS
locale dependency.
