SEPTEMBER 15, 2026
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Case File

CVE-2026-87999

HIGH · CVSS 7.1 EPSS 0.22% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-09 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

The vulnerability affects Open WebUI versions prior to 0.11.1, allowing authenticated users to exploit the system to fetch and return content from reserved IP ranges, including Azure's platform channel. This could lead to unauthorized data exposure and potential information leakage. Organizations using Open WebUI should prioritize upgrading to version 0.11.1 to mitigate the risk associated with this high-severity issue.

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-2026-87999
Severity
HIGH
CVSS
7.1
EPSS
0.22%

Original NVD Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.1, POST /api/v1/retrieval/process/web and POST /api/v1/retrieval/process/web/search in backend/open_webui/retrieval/web/utils.py treated Python's globally routable address classification as proof that a destination was external. An authenticated user could make an Azure-hosted instance fetch and return content from 168.63.129.16, the Azure platform channel, as well as other reserved ranges that the standard classification did not reject. This issue is fixed in version 0.11.1.