CVE-2026-34526

5.0 MEDIUM
Published: April 02, 2026 Modified: April 13, 2026
View on NVD

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 version 1.17.0, in src/endpoints/search.js, the hostname is checked against /^\d+\.\d+\.\d+\.\d+$/. This only matches literal dotted-quad IPv4 (e.g. 127.0.0.1, 10.0.0.1). It does not catch: localhost (hostname, not dotted-quad), [::1] (IPv6 loopback), and DNS names resolving to internal addresses (e.g. localtest.me -> 127.0.0.1). A separate port check (urlObj.port !== '') limits exploitation to services on default ports (80/443), making this lower severity than a fully unrestricted SSRF. This issue has been patched in version 1.17.0.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0
Source: security-advisories@github.com
Release Notes
https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797
Source: security-advisories@github.com
Vendor Advisory Exploit
https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Vendor Advisory Exploit

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.0 / 10.0
EPSS (Exploit Probability)
0.0%
8th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

sillytavern