has_access_to_file granted access whenever the file was attached to a shared chat the user could read, ignoring the requested access_type. A read-only shared-chat recipient therefore satisfied write and delete checks and could delete or mutate the chat owner's attached file. Gate the shared-chat branch on read access, matching the channels branch directly above it.
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🔄 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/24755
**Author:** [@Classic298](https://github.com/Classic298)
**Created:** 5/15/2026
**Status:** 🔄 Open
**Base:** `dev` ← **Head:** `fix/shared-chat-file-write-authz`
---
### 📝 Commits (1)
- [`1b53d4c`](https://github.com/open-webui/open-webui/commit/1b53d4cbcf9772d8c482ba24eff1fc9d1a80e602) fix: respect access_type in shared-chat file authorization branch
### 📊 Changes
**1 file changed** (+1 additions, -1 deletions)
<details>
<summary>View changed files</summary>
📝 `backend/open_webui/utils/access_control/files.py` (+1 -1)
</details>
### 📄 Description
has_access_to_file granted access whenever the file was attached to a shared chat the user could read, ignoring the requested access_type. A read-only shared-chat recipient therefore satisfied write and delete checks and could delete or mutate the chat owner's attached file. Gate the shared-chat branch on read access, matching the channels branch directly above it.
### Contributor License Agreement
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- [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>
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📋 Pull Request Information
Original PR: https://github.com/open-webui/open-webui/pull/24755
Author: @Classic298
Created: 5/15/2026
Status: 🔄 Open
Base:
dev← Head:fix/shared-chat-file-write-authz📝 Commits (1)
1b53d4cfix: respect access_type in shared-chat file authorization branch📊 Changes
1 file changed (+1 additions, -1 deletions)
View changed files
📝
backend/open_webui/utils/access_control/files.py(+1 -1)📄 Description
has_access_to_file granted access whenever the file was attached to a shared chat the user could read, ignoring the requested access_type. A read-only shared-chat recipient therefore satisfied write and delete checks and could delete or mutate the chat owner's attached file. Gate the shared-chat branch on read access, matching the channels branch directly above it.
Contributor License Agreement
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.