CVE-2025-59159

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.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://docs.sillytavern.app/administration/#security-checklist
https://docs.sillytavern.app/administration/config-yaml/#host-whitelisting
https://github.com/SillyTavern/SillyTavern/commit/d134abd50e4a416e3b81233242583b0a23f38320
https://github.com/SillyTavern/SillyTavern/releases/tag/1.13.4
https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-7cxj-w27x-x78q

Configurations

No configuration.

History

06 Oct 2025, 16:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-06 16:15

Updated : 2025-10-08 19:38

NVD link : CVE-2025-59159

Mitre link : CVE-2025-59159

CVE.ORG link : CVE-2025-59159

JSON object : View

Products Affected

No product.

CWE

CWE-346

Origin Validation Error

CWE-940

Improper Verification of Source of a Communication Channel

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