[3.3.4] Update open-webui to 0.9.5 Full Changelog Redirect-based SSRF protection. All outbound HTTP requests now block 3xx redirects by default via a new AIOHTTP_CLIENT_ALLOW_REDIRECTS environment variable, preventing redirect-based SSRF where a public URL silently redirects to internal addresses (RFC 1918, loopback, cloud-metadata endpoints). Affected call sites include web fetch, image loading, OAuth discovery, tool server execution, and code interpreter login. #24491 Iframe content security policy. Administrators can now configure a Content-Security-Policy for all srcdoc iframes (Artifacts, tool embeds, file previews, citation modals) via the IFRAME_CSP environment variable, restricting what LLM-generated or user-uploaded HTML can load and execute inside previews. Commit Granular markdown rendering controls. Users can now independently disable Markdown rendering for user messages and assistant responses from Interface settings, preventing unintended formatting when pasting text that contains Markdown-sensitive characters. Commit Channel streaming and tool support. Mentioning a model in a Channel now streams responses in real time and supports the full chat completion pipeline, including native and default function calling, built-in tools (web search, image generation), user tools, MCP tools, filters, and RAG knowledge injection the same capabilities available in standard chats. Notes create and open reliability. Creating new notes and opening existing notes no longer fails with a TypeError caused by is_pinned being passed to the SQLAlchemy model on create, and passed twice to NoteResponse on read. #24484, #24486 Feedback user attribution spoofing. Submitting evaluation feedback can no longer forge the user_id field through mass-assignment, preventing authenticated users from attributing ratings to other users and corrupting Elo leaderboard rankings and admin feedback exports. #24508 URL parser SSRF bypass. URL validation now rejects backslash, tab, CR, and LF characters that cause urllib and requests/aiohttp to disagree on the target host, closing a parser-confusion SSRF bypass. #24534 Profile image MIME-type allowlist. Serving profile images from data URIs now enforces a strict MIME-type allowlist (PNG, JPEG, GIF, WEBP by default, configurable via PROFILE_IMAGE_ALLOWED_MIME_TYPES) and sets X-Content-Type-Options: nosniff, preventing stored-XSS through SVG or other executable content types. Commit Legacy chat history self-healing. Loading legacy conversations now automatically detects broken parent-link graphs in migrated message records, merges missing messages from the embedded JSON history, and backfills them to the normalized table so future loads use the fast path without data loss. Commit Removed unauthenticated retrieval status endpoint. The unauthenticated GET /api/v1/retrieval/ status endpoint has been removed as dead code retrieval configuration is already available through authenticated admin endpoints. #24497