CVE-2026-44650
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
SillyTavern before version 1.18.0 has a vulnerability in the POST /api/extensions/delete endpoint that allows deletion of the entire user extensions directory by sending extensionName "." (dot). The sanitize-filename validation is bypassed, and no authentication is required in the default configuration.
Risk Assessment
An unauthenticated attacker can permanently delete all user extensions, leading to data loss and disruption of application functionality.
Recommendation
Update SillyTavern to version 1.18.0 or later.
Original NVD description (English source)
SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to 1.18.0, POST /api/extensions/delete endpoint accepts extensionName: "." which bypasses sanitize-filename validation, causing the entire user extensions directory to be recursively deleted. No authentication is required in the default configuration. This vulnerability is fixed in 1.18.0.