CVE-2026-35050: text-generation-webui affected by Remote Code Execution (RCE) through Path Traversal at "Session -> Save extention settings to user_data/settings.yaml".

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-06 · updated 2026-10-23
Weakness: CWE-22

Description

text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.1.1, users can save extention settings in "py" format and in the app root directory. This allows to overwrite python files, for instance the "download-model.py" file could be overwritten. Then, this python file can be triggered to get executed from "Model" menu when requesting to download a new model. This vulnerability is fixed in 4.1.1.

Affected products

oobabooga Textgen: before 4.1.1 — fixed in 4.1.1

How to fix

Upgrade to a fixed version: oobabooga Textgen 4.1.1. Check the vendor advisory for mitigations.

References

https://github.com/oobabooga/text-generation-webui/security/advisories/GHSA-jg96-p5p6-q3cv

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