[PR #24524] [MERGED] fix: prevent redirect-based SSRF and enforce collecton write access #115016

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GiteaMirror · 2026-05-18T15:56:28-05:00

GiteaMirror commented

2026-05-18 15:56:28 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/24524
Author: @Classic298
Created: 5/9/2026
Status: ✅ Merged
Merged: 5/10/2026
Merged by: @tjbck

Base: dev ← Head: fix/ssrf-redirect-image-base64-from-url

📝 Commits (3)

2f11de8 fix: prevent redirect-based SSRF in get_image_base64_from_url
0efee1b fix: enforce collection write access on process_file endpoint
2868f6b fix: enforce collection write access on process_files_batch endpoint

📊 Changes

2 files changed (+18 additions, -3 deletions)

View changed files

📝 backend/open_webui/routers/retrieval.py (+5 -0)
📝 backend/open_webui/utils/files.py (+13 -3)

📄 Description

Cohort follow-up to PR #24491. That PR patched three call sites (SafeWebBaseLoader._scrape, get_content_from_url, load_url_image) to pass allow_redirects=False on the underlying HTTP client; this fourth call site in utils/files.py was missed.

get_image_base64_from_url() is invoked from convert_url_images_to_base64 in utils/middleware.py on every /api/chat/completions request whose message content includes an image_url part. validate_url() is called on the originally-submitted URL only; the aiohttp session.get() call had no allow_redirects argument and the shared session pool does not override the aiohttp default (allow_redirects=True). An authenticated user sending a chat message with image_url pointing at an attacker host that 302-redirects to 169.254.169.254 / 127.0.0.1 / RFC1918 reached the internal target. This is the most reachable variant in the redirect cluster: no special endpoint, no admin permission, no feature flag.

Apply the same one-line fix as the other three call sites: pass allow_redirects=AIOHTTP_CLIENT_ALLOW_REDIRECTS (defaults to False).

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Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/open-webui/open-webui/pull/24524 **Author:** [@Classic298](https://github.com/Classic298) **Created:** 5/9/2026 **Status:** ✅ Merged **Merged:** 5/10/2026 **Merged by:** [@tjbck](https://github.com/tjbck) **Base:** `dev` ← **Head:** `fix/ssrf-redirect-image-base64-from-url` --- ### 📝 Commits (3) - [`2f11de8`](https://github.com/open-webui/open-webui/commit/2f11de8dcc1cd8d6d69ae8b5124309ceec66a82d) fix: prevent redirect-based SSRF in get_image_base64_from_url - [`0efee1b`](https://github.com/open-webui/open-webui/commit/0efee1b1a21ca3912eb47b8db615ead938491bd1) fix: enforce collection write access on process_file endpoint - [`2868f6b`](https://github.com/open-webui/open-webui/commit/2868f6b8c3770fd54e89f35967a916f3f2f01dfc) fix: enforce collection write access on process_files_batch endpoint ### 📊 Changes **2 files changed** (+18 additions, -3 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/routers/retrieval.py` (+5 -0) 📝 `backend/open_webui/utils/files.py` (+13 -3) </details> ### 📄 Description Cohort follow-up to PR #24491. That PR patched three call sites (SafeWebBaseLoader._scrape, get_content_from_url, load_url_image) to pass allow_redirects=False on the underlying HTTP client; this fourth call site in utils/files.py was missed. get_image_base64_from_url() is invoked from convert_url_images_to_base64 in utils/middleware.py on every /api/chat/completions request whose message content includes an image_url part. validate_url() is called on the originally-submitted URL only; the aiohttp session.get() call had no allow_redirects argument and the shared session pool does not override the aiohttp default (allow_redirects=True). An authenticated user sending a chat message with image_url pointing at an attacker host that 302-redirects to 169.254.169.254 / 127.0.0.1 / RFC1918 reached the internal target. This is the most reachable variant in the redirect cluster: no special endpoint, no admin permission, no feature flag. Apply the same one-line fix as the other three call sites: pass allow_redirects=AIOHTTP_CLIENT_ALLOW_REDIRECTS (defaults to False). ### Contributor License Agreement  - [x] By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms. > [!NOTE] > Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-05-18 15:56:28 -05:00

GiteaMirror closed this issue

2026-05-18 15:56:36 -05:00

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Reference: github-starred/open-webui#115016