SillyTavern — Vulnerability (CVE-2026-44650)
Date: 2026-05
Attack vector: path-traversal
Category: vulnerability-disclosure
Severity: Critical
CVE: CVE-2026-44650
CWE: CWE-22
CVSS: 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)

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.


Mitigations:

Architectural layers (MAESTRO):