Vulnerability · Published Feb 19, 2026 · Assigned by GitHub_M
CVE-2026-26286SillyTavern has Server-Side Request Forgery (SSRF) via Asset Download Endpoint that Allows Reading Internal Services
High 7.1
In plain English
A high-severity server-side request forgery in SillyTavern from SillyTavern. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
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 1.16.0, a Server-Side Request Forgery (SSRF) vulnerability in the asset download endpoint allows authenticated users to make arbitrary HTTP requests from the server and read the full response body, enabling access to internal services, cloud metadata, and private network resources. The vulnerability has been patched in the version 1.16.0 by introducing a whitelist domain check for asset download requests. It can be reviewed and customized by editing the `whitelistImportDomains` array in the `config.yaml` file.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SillyTavern | SillyTavern | < 1.16.0 |
Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N