CVE-2026-33626Known exploitationPublic exploitNetwork attack vector

Internal resource disclosure via unvalidated image URLs

Published Apr 20, 2026 · Updated Apr 20, 2026

SSRF in InternLM LMDeploy before 0.12.3 allows remote attackers to read internal resources through a crafted vision-model image URL. An image URL supplied to /v1/chat/completions reaches the vision-language loader, which performs an HTTP request without rejecting private, loopback, link-local, or metadata-service addresses. An exposed vision-language API with default authentication settings is sufficient to disclose cloud credentials or probe internal services reachable from the server.

CVSS severity7.5
High
EPSS probability45.25%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in InternLM LMDeploy before 0.12.3 allows remote attackers to read internal resources through a crafted vision-model image URL. An image URL supplied to /v1/chat/completions reaches the vision-language loader, which performs an HTTP request without rejecting private, loopback, link-local, or metadata-service addresses. An exposed vision-language API with default authentication settings is sufficient to disclose cloud credentials or probe internal services reachable from the server.

The record

CVE
CVE-2026-33626
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
InternLM
Product
LMDeploy
Classifications
CWE-918, CAPEC-664, T1046, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.
  3. Apr 22, 2026Exploitation reportedSysdig LMDeploy honeypot exploitation

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.12.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

InternLM · LMDeployversion=< 0.12.3

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1046Network Service Discovery
T1552.005Unsecured Credentials Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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