High severity7.5NVD Advisory· Published Apr 7, 2026· Updated Apr 28, 2026
CVE-2026-35485
CVE-2026-35485
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.
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Affected products
2- Range: <4.3
Patches
Vulnerability mechanics
References
1- github.com/oobabooga/text-generation-webui/security/advisories/GHSA-hqg5-487v-5mc6nvdExploitVendor Advisory
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