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Open WebUI Vulnerability via File Upload Leads to 1-Click RCE Attack

📅 12 May 2026 at 17:27 UTC📰 Cyber Security NewsView original source ↗
Open WebUI Vulnerability via File Upload Leads to 1-Click RCE Attack

A single click can allow attackers to exploit a critical, unpatched flaw in Open WebUI to seize control of AI workspaces, execute remote code, hijack accounts, and steal sensitive chat histories. Discovered by security researcher Metin Yunus Kandemir, the vulnerability stems from a Stored Cross-Site Scripting (XSS) flaw in the platform’s profile image upload feature. […] The post Open WebUI Vulnerability via File Upload Leads to 1-Click RCE Attack appeared first on Cyber Security News.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A Stored Cross-Site Scripting (XSS) flaw in Open WebUI's profile image upload feature allows attackers to seize control of AI workspaces and execute remote code with a single click, posing significant security risks.

⚙️Technical Details
Affected Systems
Open WebUI
Attack Vectors
File Upload
💥Impact Assessment
Severity: Critical
Who Is at Risk
AI workspace administrators and users
🛡️Recommended Actions
1Immediately disable file uploads in Open WebUI profiles.
2Implement a web application firewall (WAF) to block suspicious traffic.
3Conduct thorough vulnerability assessments for all AI workspaces using Open WebUI.
📦Affected Products
Open WebUI

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