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USE_CUDA_VER=cu126
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* fix: block external resource loading in Vega chart rendering to prevent client-side SSRF
renderVegaVisualization renders vega/vega-lite chart specs that appear in untrusted chat content (shared chats, channel messages, assistant/RAG/tool output) by constructing a Vega View with no restricted loader, so a crafted spec could make a viewer's browser issue arbitrary outbound requests. There are two paths: data.url (and topojson/geo data) is fetched via loader.load at view construction, and image-mark urls are resolved via loader.sanitize and emitted as <image href> into the output SVG, fetched by the browser when the SVG is displayed. Both are client-side SSRF, and against same-origin or CORS-permissive targets allow reading the response back into the page. Pass a loader that rejects external resource loads on both paths, load throws and sanitize rejects http(s)/protocol-relative URIs, so rendered charts can only use inline data. Inline data.values charts are unaffected.
Co-authored-by: Zureno <Zureno@users.noreply.github.com>
* fix: resolve Vega image urls with the URL parser before blocking external loads
The previous scheme regex could be bypassed with encodings the browser URL parser
normalizes away, such as a leading tab or newline before the scheme and backslash
variants of protocol-relative urls like /\evil.com, which would still be emitted
into the rendered SVG and fetched externally on display. Resolve the uri against
document.baseURI with the browser's own URL parser and only allow data: uris and
same-origin results, so the check cannot diverge from what the browser would
actually fetch. Also shortens the explanatory comments.
---------
Co-authored-by: Zureno <Zureno@users.noreply.github.com>
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.
