# CVE-2026-63086: text-generation-inference 3.3.7 SSRF via fetch_image in multimodal chat completions

> Unauthenticated attackers can force the server to make arbitrary HTTP requests, enabling internal port scanning and cloud metadata credential theft.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2026
- **Updated:** 16 Jul 2026
- **Also known as:** GHSA-c6cx-mj2w-vjcr

## What is CVE-2026-63086?

CVE-2026-63086 is a medium-severity server-side request forgery vulnerability in huggingface text-generation-inference, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

text-generation-inference through 3.3.7 contains a server-side request forgery (SSRF) vulnerability in the OpenAI-compatible multimodal chat completions endpoint that allows unauthenticated network attackers to coerce the server into issuing arbitrary HTTP GET requests by supplying a crafted image_url value in chat message content. The fetch_image function in router/src/validation.rs performs no validation of private, loopback, link-local, or cloud metadata target addresses, and the reqwest HTTP client follows redirects by default, enabling attackers to bypass scheme checks via redirect chains to reach internal services and cloud instance-metadata endpoints for internal port scanning and credential theft.

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

## Which versions are affected by CVE-2026-63086?


## How do I fix CVE-2026-63086?

No fix has been published for CVE-2026-63086 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-63086 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63086 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63086 and fix it if it is affected.

What it is: CVE-2026-63086 is a medium-severity server-side request forgery vulnerability in huggingface text-generation-inference, published on 16 Jul 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-2026-63086 exists.

Affected product: huggingface text-generation-inference. 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-2026-63086/ (Markdown: https://insights.sbomify.com/CVE-2026-63086/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63086
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63086
- OSV: https://osv.dev/vulnerability/CVE-2026-63086

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63086/
Summaries are generated and may contain mistakes; the official description above is the record.