Vulnerability · Published May 29, 2026 · Assigned by GitHub_M

CVE-2026-44650SillyTavern: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Critical 9.1

In plain English

A critical-severity path traversal in SillyTavern from SillyTavern. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.6%top 52.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	sillytavern	1.18.0	GHSA-886q-f44j-h6wh

Affected products (as reported)

Vendor	Product	Versions
SillyTavern	SillyTavern	< 1.18.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-886q-f44j-h6wh x_refsource_CONFIRM