# Open WebUI v0.9.5 — Release & Upgrade Intelligence
- **Product:** Open WebUI (https://openwebui.com)
- **Version:** v0.9.5
- **Released:** May 10, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/open-webui/updates/v0.9.5/

## Executive Summary (TL;DR)
Open WebUI v0.9.5. Source highlight: 🛡️ **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 endpoin

## New Features
- 🛡️ **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
- 🔧 **Terminal proxy response headers.** Administrators can now inject custom response headers into terminal proxy responses via the `TERMINAL_PROXY_HEADERS` environment variable (JSON object), enabling deployment-specific security headers like sandbox policies for proxied content. 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.

## Bug Fixes
- 📝 **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
- 🔐 **Skill public sharing permission enforcement.** Creating or updating skills now filters access grants through the `sharing.public_skills` permission, preventing non-admin users from making skills publicly accessible without the required permission. #24494
- 🔐 **Calendar public sharing permission enforcement.** Creating or updating calendars now filters access grants through a new `sharing.public_calendars` permission, preventing users from making calendars publicly readable or writable without explicit admin-granted sharing permission. #24493
- 🔐 **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
- 🛡️ **Image URL redirect-based SSRF.** Chat messages containing image URLs no longer follow 3xx redirects to internal addresses during base64 conversion, closing the most reachable redirect-based SSRF variant that required no special permissions or feature flags. #24524
- 🛡️ **Collection write access on file processing.** The `process_file` and `process_files_batch` retrieval endpoints now enforce collection write-access checks before embedding content, preventing authenticated users from injecting file content into another user's knowledge-base collection. #24524