CVE-2026-35485: text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in…

PriorityP352high7.5CVSS 3.1

AVNACLPRNUINSUCHINAN

EPSS

0.68%

47.6th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
oobabooga	text-generation-webui	< 4.3	4.3
oobabooga	textgen	< 4.3	4.3

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