AUGUST 16, 2026
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Case File

CVE-2026-70488

MEDIUM · CVSS 4.3 EPSS 0.21% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The Open WebUI platform versions 0.9.6 to 0.11.0 are vulnerable due to improper authorization checks on the sync cleanup endpoint, allowing users with write access to one knowledge base to manipulate directories and file embeddings in another knowledge base. This can lead to unintended data loss and disruption of document retrieval functionalities. Organizations using affected versions should prioritize upgrading to 0.11.0 to mitigate potential data integrity issues.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-70488
Severity
MEDIUM
CVSS
4.3
EPSS
0.21%

Original NVD Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objects belonged to that knowledge base. A user with write access to one knowledge base could delete directories and remove file embeddings from another knowledge base, causing documents to drop out of retrieval results and breaking chat-with-file for targeted documents without disclosing contents. This issue is fixed in 0.11.0.