Log in Start free

Vulnerability · Published Oct 6, 2025 · Assigned by GitHub_M

CVE-2025-59159SillyTavern Web Interface Vulnerable to DNS Rebinding

Critical 9.7

In plain English

A critical-severity security flaw in SillyTavern from SillyTavern. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.7Critical
Exploit odds (30 days)0.2%top 83.5% 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. In versions prior to 1.13.4, the web user interface for SillyTavern is susceptible to DNS rebinding, allowing attackers to perform actions like install malicious extensions, read chats, inject arbitrary HTML for phishing attacks, etc. The vulnerability has been patched in the version 1.13.4 by introducing a server configuration setting that enables a validation of host names in inbound HTTP requests according to the provided list of allowed hosts: `hostWhitelist.enabled` in config.yaml file or `SILLYTAVERN_HOSTWHITELIST_ENABLED` environment variable. While the setting is disabled by default to honor a wide variety of existing user configurations and maintain backwards compatibility, existing and new users are encouraged to review their server configurations and apply necessary changes to their setup, especially if hosting over the local network while not using SSL.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmsillytavern1.13.4GHSA-7cxj-w27x-x78q

Affected products (as reported)

VendorProductVersions
SillyTavern SillyTavern < 1.13.4

Weakness: CWE-346, CWE-940 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References