CVE-2026-35485

High

Description

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductOobabooga Textgen
PublishedApr 7, 2026
First seenApr 7, 2026

How to fix

Update
  • oobabooga textgen4.3 or later

Affected products

ProductAffected versionsFixed in
oobabooga textgenv < 4.34.3

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