# CVE-2026-26286: SillyTavern has Server-Side Request Forgery (SSRF) via Asset Download Endpoint that Allows Reading Internal Services

> Authenticated attackers can exploit an SSRF vulnerability in SillyTavern to read internal services and cloud metadata via the asset download endpoint.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Feb 2026
- **Updated:** 20 Feb 2026
- **Also known as:** GHSA-cccp-94vg-j92r

## What is CVE-2026-26286?

CVE-2026-26286 is a high-severity server-side request forgery vulnerability in SillyTavern, published on 19 Feb 2026. Any signed-in user can exploit it over the network, 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. In versions prior to 1.16.0, a Server-Side Request Forgery (SSRF) vulnerability in the asset download endpoint allows authenticated users to make arbitrary HTTP requests from the server and read the full response body, enabling access to internal services, cloud metadata, and private network resources. The vulnerability has been patched in the version 1.16.0 by introducing a whitelist domain check for asset download requests. It can be reviewed and customized by editing the `whitelistImportDomains` array in the `config.yaml` file.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-26286?

It affects 1 product.


Products: Sillytavern Sillytavern.

## How do I fix CVE-2026-26286?

No fix has been published for CVE-2026-26286 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26286 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26286 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-2026-34523](https://insights.sbomify.com/CVE-2026-34523/): SillyTavern: Path traversal allows file existence oracle (medium 5.3)
- [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-2026-26286 and fix it if it is affected.

What it is: CVE-2026-26286 is a high-severity server-side request forgery vulnerability in SillyTavern, published on 19 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26286 exists.

Affected product: SillyTavern. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2026-26286/ (Markdown: https://insights.sbomify.com/CVE-2026-26286/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26286
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26286
- OSV: https://osv.dev/vulnerability/CVE-2026-26286

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-26286/
Summaries are generated and may contain mistakes; the official description above is the record.