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HIGH severity

SillyTavern: Path Traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data rootGHSA-vprr-q85p-79mf

HIGH

GHSA-vprr-q85p-79mf is a high-severity (CVSS 8.3) Path Traversal vulnerability in sillytavern. A fix is available for sillytavern — see the affected versions and patch details below.

Also known asCVE-2026-34524
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for GHSA-vprr-q85p-79mf.

EPSS Exploitation Probability

via FIRST.org ↗
0.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs48th percentile — riskier than 48% of all scored CVEsHighest risk
0.00%0.38%0.75%1.13%0.0%0.6%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
sillytavernnpm
2Kdownloads / week

Description

Summary

A Path Traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url="..".

Details

The input validator used by avatar_url blocks only / and NUL bytes, but does not block traversal segments like ...

Evidence:

Because avatar_url=".." is accepted, path.join(<user>/chats, "..") resolves to <user>/, enabling direct access to files outside the chats directory.

PoC

Prerequisites:

  • Valid authenticated session cookie (cookie.txt)
  • Valid CSRF token ($TOKEN)

Read sensitive file (secrets.json):

curl -b cookie.txt -H "x-csrf-token: $TOKEN" -H "content-type: application/json" \
  -d '{"avatar_url":"..","is_group":false,"file":"secrets.json","format":"jsonl","exportfilename":"x"}' \
  http://TARGET:8000/api/chats/export

Delete sensitive file (settings.json):

curl -b cookie.txt -H "x-csrf-token: $TOKEN" -H "content-type: application/json" \
  -d '{"avatar_url":"..","chatfile":"settings.json"}' \
  http://TARGET:8000/api/chats/delete

Impact

  • Confidentiality: exposed per-user secrets and config data.
  • Integrity/Availability: attacker can delete critical per-user files and break account operation.
  • Risk is significant in multi-user or remotely reachable deployments.

Resolution

The issue was addressed in version 1.17.0

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmsillytavernall versions1.17.0npm install sillytavern@1.17.0

Affected Products

1 product · 1 configurations
Application
sillytavernsillytavern
< 1.17.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sillytavern, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update sillytavern to 1.17.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vprr-q85p-79mf is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

## Summary A Path Traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example `secrets.json` and `settings.json`) by supplying `avatar_url=".."`. ### Details The input validator used by `avatar_url` blocks only `/` and NUL bytes, but does not block traversal segments like `..`. Evidence: - Weak validator regex (does not reject `..`): <https://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/middleware/validateFileName.js#L24-L27> - Vulnerable delete path construct
O3 Security · Impact-Aware SCA

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SillyTavern: Path Traversal in `/api/chats/export` and…