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.
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
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | sillytavern | 1.13.4 | GHSA-7cxj-w27x-x78q |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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
- https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-7cxj-w27x-x78q x_refsource_CONFIRM
- https://github.com/SillyTavern/SillyTavern/commit/d134abd50e4a416e3b81233242583b0a23f38320 x_refsource_MISC
- https://docs.sillytavern.app/administration/#security-checklist x_refsource_MISC
- https://docs.sillytavern.app/administration/config-yaml/#host-whitelisting x_refsource_MISC
- https://github.com/SillyTavern/SillyTavern/releases/tag/1.13.4 x_refsource_MISC