CVE-2026-35050: text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.1.1, users can save
criticalvulnerabilityLLM-Specific
security
Summary
text-generation-webui is an open-source web interface for running Large Language Models (AI systems that generate text). Before version 4.1.1, the application allowed users to save extension settings as Python files (code files that run on servers) in the main app directory, which could let attackers overwrite important Python files like 'download-model.py' and execute malicious code when users tried to download a new model.
Solution / Mitigation
This vulnerability is fixed in version 4.1.1.
Vulnerability Details
CVSS Score
9.1(critical)
EPSS (30-day exploit probability)
EPSS: 0.0%
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector
network
Attack Complexity
low
Privileges Required
high
User Interaction
none
Disclosure Date
April 6, 2026
Classification
Attack SophisticationTrivial
Impact (CIA+S)
integrityavailability
AI Component TargetedInference
Affected Vendors
Monthly digest — independent AI security research
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-35050
First tracked: April 6, 2026 at 08:08 PM
Classified by LLM (prompt v3) · confidence: 95%