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CVE-2026-63764

LMDeploy Server-Side Request Forgery via HTTP Redirect Bypass

CVSS 4.0 7.7 HIGHCVSS 3.1 8.6 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-63764

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-63764

Published

lmdeploy

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "InternLM",
                    "product": "lmdeploy",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/lmdeploy",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "0.14.0"
                        },
                        {
                            "status": "unaffected",
                            "version": "03c313006d17cc3feae86b633c44206a997c44db",
                            "versionType": "git"
                        }
                    ],
                    "repo": "https://github.com/InternLM/lmdeploy"
                }

Original source record · Cite this exact observation · Complete original publisher JSON