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 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.

Score
CVSS 3.1 7.5 High
Status
Analyzed - security-advisories@github.com
Published
2026-04-07
Last modified
2026-10-26
Weaknesses
CWE-22

Affected products

References

 
 
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