LLMHigh
CVE-2026-35485: text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.…
- Occurred
- Apr 7, 2026
- Published
- Apr 7, 2026
- Source
- NVD CVE
Summary
text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_grammar() allows reading any file on the server filesystem with no extension restriction. Gradio does not server-side validate dropdown values, so an attacker can POST directory traversal payloads (e.g., ../../../etc/passwd) via the API and receive the full file contents in the response. This vulnerability is fixed in 4.3.
Tags
- CVE
- CVE-2026-35485
- cvss:HIGH
Classification
Category confidence: 95%
Severity confidence: 90%
Rationale: Vulnerability in LLM web UI allows unauthorized file access, representing a significant security risk.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8