SSRF in Internlm Lmdeploy
CVE-2026-63764
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Internlm Lmdeploy — versions 03c313006d17cc3feae86b633c44206a997c44db, 0, 648df3b
Weakness classification (CWE)
References
- github.com/InternLM/lmdeploy/issues/4761 (issue-tracking, Exploit, product, technical-description, exploit, Mitigation, Issue Tracking)
- github.com/InternLM/lmdeploy (patch)
- www.vulncheck.com/advisories/lmdeploy-server-side-request-forgery-via-http-redi… (third-party-advisory)
- github.com/InternLM/lmdeploy/pull/4734 (issue-tracking, Patch, patch, Issue Tracking)
- github.com/InternLM/lmdeploy/commit/03c313006d17cc3feae86b633c44206a997c44db (Patch, patch)
- www.vulncheck.com/advisories/lmdeploy-server-side-request-forgery-via-http-redi… (Exploit, Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-63764?
- CVE-2026-63764 is a high-severity vulnerability in Internlm Lmdeploy, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-21.
- How severe is CVE-2026-63764?
- High severity. CVSS v3 base score is 8.6 out of 10.