High severity · published Jul 21, 2026
CVE-2026-63764
LMDeploy Server-Side Request Forgery via HTTP Redirect Bypass
8.6
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LM
lmdeploy · InternLM
through 0.14.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63764
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63764
Patch
https://github.com/InternLM/lmdeploy/commit/03c313006d17cc3feae86b633c44206a997c44db
Exploit
https://github.com/InternLM/lmdeploy/issues/4761
Issue Tracking
https://github.com/InternLM/lmdeploy/pull/4734
Exploit
https://www.vulncheck.com/advisories/lmdeploy-server-side-request-forgery-via-http-redirect-bypass
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