CVE-2026-33990Network attack vector

Host-local data disclosure via unvalidated token realm

Published Apr 1, 2026 · Updated Apr 1, 2026

SSRF in Docker Model Runner before 1.1.25 allows attackers to read host-local service responses through a malicious OCI registry. The OCI token exchange follows an unvalidated realm URL from WWW-Authenticate, returns the resulting GET response body, and can relay it in a Bearer token. Exploitation requires a pull from an attacker-controlled registry or access from an unprivileged container; ECI blocks container access unless host-side TCP exposure remains enabled.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Docker Model Runner before 1.1.25 allows attackers to read host-local service responses through a malicious OCI registry. The OCI token exchange follows an unvalidated realm URL from WWW-Authenticate, returns the resulting GET response body, and can relay it in a Bearer token. Exploitation requires a pull from an attacker-controlled registry or access from an unprivileged container; ECI blocks container access unless host-side TCP exposure remains enabled.

The record

CVE
CVE-2026-33990
Published
Apr 1, 2026
Updated
Apr 1, 2026
Vendor
Docker
Product
Docker Model Runner
Classifications
CWE-918, T1090
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 2026Record updatedLatest update available in the CVE record.

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=< 1.1.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Docker · Docker Model Runnerversion=< 1.1.25

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.1GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:L/SI:N/SA: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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1090Proxy

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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