SillyTavern up to 1.16.x path traversal

Summaryinfo

A vulnerability described as critical has been identified in SillyTavern up to 1.16.x. This impacts an unknown function. Such manipulation leads to path traversal. This vulnerability is listed as CVE-2026-34523. The attack must be carried out locally. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in SillyTavern up to 1.16.x. It has been rated as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes:

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, a path traversal vulnerability in the static file route handler allows any unauthenticated user to determine whether files exist anywhere on the server's filesystem. by sending percent-encoded "../" sequences (%2E%2E%2F) in requests to static file routes, an attacker can check for the existence of files. This issue has been patched in version 1.17.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-34523 since 03/30/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.17.0 eliminates this vulnerability.

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Productinfo

Name

• SillyTavern

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16

Website

• Product: https://github.com/SillyTavern/SillyTavern/

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