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

Quick assessment

Affected
InternLM lmdeploy
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

InternLM lmdeploy是中国InternLM组织开源的一个用于压缩、部署和服务 LLM 的工具包。 InternLM lmdeploy 648df3b版本存在服务端请求伪造漏洞，该漏洞源于服务端请求伪造，允许未经身份验证的攻击者通过提供特制的image_url并重定向至内部目标，绕过URL安全检查，从而访问内部服务和云元数据端点。

CVSS 8.6 · High EPSS 0.51% · P42

Affected Version Matrix 2

VendorProduct Version RangeStatus
InternLM lmdeploy ≤ 0.14.0 affected
03c313006d17cc3feae86b633c44206a997c44db unaffected
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I. Basic Information for CVE-2026-63764

Vulnerability Information
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Vulnerability Title
LMDeploy Server-Side Request Forgery via HTTP Redirect Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
InternLM lmdeploy 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
InternLM lmdeploy是中国InternLM组织开源的一个用于压缩、部署和服务 LLM 的工具包。 InternLM lmdeploy 648df3b版本存在服务端请求伪造漏洞，该漏洞源于服务端请求伪造，允许未经身份验证的攻击者通过提供特制的image_url并重定向至内部目标，绕过URL安全检查，从而访问内部服务和云元数据端点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
InternLM lmdeploy 0 ~ 0.14.0 -

II. Public POCs for CVE-2026-63764

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7487 chars
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III. Intelligence Information for CVE-2026-63764

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Patches & Fixes for CVE-2026-63764 (1)

Vendor Advisories for CVE-2026-63764 (2)

Proof of Concept for CVE-2026-63764 (1)

Other References for CVE-2026-63764 (1)

IV. Related Vulnerabilities

Same product: lmdeploy
Same vendor: InternLM
Same weakness: CWE-918

V. Comments for CVE-2026-63764

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