# CVE-2026-63764: LMDeploy Server-Side Request Forgery via HTTP Redirect Bypass

> An unauthenticated attacker can exploit an SSRF vulnerability in LMDeploy to access internal services or cloud metadata via crafted image URLs.

- **Severity:** High 7.7 (`CVSS:4.0/AV:N/AC:L/AT:N/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:** 21 Jul 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-rqhf-rg9p-w5gg

## What is CVE-2026-63764?

CVE-2026-63764 is a high-severity server-side request forgery vulnerability in InternLM lmdeploy, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

LMDeploy through 0.14.0, fixed in commit 03c3130, contains a server-side request forgery (SSRF) vulnerability in the _load_http_url function within the connection.py media handler, where the private-IP guard validates only the original URL without re-validating hosts after HTTP redirects. An unauthenticated attacker can submit a crafted image_url to the chat completions endpoint pointing to an attacker-controlled host that returns a redirect to a private IP or cloud-metadata endpoint, causing the server to follow the redirect and expose internal service content through the model pipeline.

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

## Which versions are affected by CVE-2026-63764?

It affects 1 product.


Products: Internlm Lmdeploy.

## How do I fix CVE-2026-63764?

No fix has been published for CVE-2026-63764 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-63764 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63764 exists.

## Other vulnerabilities in InternLM lmdeploy

- [CVE-2025-67729](https://insights.sbomify.com/CVE-2025-67729/): lmdeploy vulnerable to Arbitrary Code Execution via Insecure Deserialization in torch.load() (high 8.8)
- [CVE-2026-33626](https://insights.sbomify.com/CVE-2026-33626/): LMDeploy Vulnerable to Server-Side Request Forgery (SSRF) via Vision-Language Image Loading (high 7.5)
- [CVE-2025-3162](https://insights.sbomify.com/CVE-2025-3162/): InternLM LMDeploy PT File utils.py load_weight_ckpt deserialization (medium 4.8)
- [CVE-2025-3163](https://insights.sbomify.com/CVE-2025-3163/): InternLM LMDeploy conf.py open code injection (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63764 and fix it if it is affected.

What it is: CVE-2026-63764 is a high-severity server-side request forgery vulnerability in InternLM lmdeploy, published on 21 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-2026-63764 exists.

Affected product: InternLM lmdeploy. 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-2026-63764/ (Markdown: https://insights.sbomify.com/CVE-2026-63764/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63764
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63764
- OSV: https://osv.dev/vulnerability/CVE-2026-63764

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-63764/
Summaries are generated and may contain mistakes; the official description above is the record.