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

> Unauthenticated attackers can determine file existence on the server filesystem via path traversal in static file routes.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 Apr 2026
- **Updated:** 3 Apr 2026
- **Also known as:** GHSA-525j-2hrj-m8fp

## What is CVE-2026-34523?

CVE-2026-34523 is a medium-severity path traversal vulnerability in SillyTavern, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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. 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.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-34523?

2 open source packages ship an affected version, including sillytavern. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `sillytavern` | npm | All versions | 1.17.0 |
| `sillytavern` | npm | All versions | 1.17.0 |

Products: Sillytavern Sillytavern.

## How do I fix CVE-2026-34523?

Upgrade sillytavern to 1.17.0 or later.

## Is CVE-2026-34523 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34523 exists.

## Other vulnerabilities in SillyTavern

- [CVE-2026-34524](https://insights.sbomify.com/CVE-2026-34524/): SillyTavern: Path Traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data root (high 8.3)
- [CVE-2026-34522](https://insights.sbomify.com/CVE-2026-34522/): SillyTavern: Path traversal in `/api/chats/import` allows arbitrary file write outside intended chat directory (high 8.1)
- [CVE-2026-26286](https://insights.sbomify.com/CVE-2026-26286/): SillyTavern has Server-Side Request Forgery (SSRF) via Asset Download Endpoint that Allows Reading Internal Services (high 7.1)
- [CVE-2026-34526](https://insights.sbomify.com/CVE-2026-34526/): SillyTavern: Incomplete IP validation in /api/search/visit allows SSRF via localhost and IPv6 (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34523 and fix it if it is affected.

What it is: CVE-2026-34523 is a medium-severity path traversal vulnerability in SillyTavern, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34523 exists.

Affected packages and fixed versions:
- sillytavern (npm): affected all versions; fixed in 1.17.0
- sillytavern (npm): affected all versions; fixed in 1.17.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-34523/ (Markdown: https://insights.sbomify.com/CVE-2026-34523/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34523
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34523
- OSV: https://osv.dev/vulnerability/CVE-2026-34523

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34523/
Summaries are generated and may contain mistakes; the official description above is the record.