What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-21 · updated 2026-10-24
• Weakness: CWE-918

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.

Affected products

• InternLM lmdeploy: through 0.14.0

References

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

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