medium CVSS 6.5 EPSS 0.34%

CVE-2026-24845·Docker vulnerability

malcontent discovers supply-chain compromises through. context, differential analysis, and YARA. Starting in version 0.10.0 and prior to version 1.20.3, malcontent could be made to expose Docker registry credentials if it scanned a specially crafted OCI image reference. malcontent uses google/go-containerregistry for OCI image pulls, which by default uses the Docker credential keychain. A malicious registry could return a `WWW-Authenticate` header redirecting token authentication to an attacker-controlled endpoint, causing credentials to be sent to that endpoint. Version 1.20.3 fixes the issue by defaulting to anonymous auth for OCI pulls.

Severity
medium
Software
Docker
Fixed in
1.20.3
Published

How likely is exploitation

FIRST's Exploit Prediction Scoring System puts the probability of this CVE being exploited in the next 30 days at 0.34% — higher than 25% of all published CVEs. EPSS is an independent forecast of exploitation, not a severity rating: it says nothing about how much damage a successful attack does, which is what a CVSS score measures.

Affected versions

From: 0.1.0

Until: 1.20.3

Fixed in: 1.20.3

How to fix this CVE

Update Docker to version 1.20.3 or later to remediate the credential exposure vulnerability in the OCI image scanning process. The vulnerability allows malicious registries to intercept Docker credentials through manipulated authentication headers. After updating, verify the new version is running and restart any dependent services that rely on Docker authentication.

sudo dnf update docker-ce --assumeyes

Defensia detects this vulnerability

How to check if you are affected

  1. Run 'docker --version' and verify the installed version is below 1.20.3; affected versions range from 0.10.0 to 1.20.2
  2. Check if OCI image scanning or malcontent is enabled in your Docker environment with 'docker ps -a | grep malcontent'
  3. Search system logs for failed or unexpected authentication attempts to external registries: 'grep -i "authentication\|registry" /var/log/docker.log | head -20'
  4. After patching, confirm the new version with 'docker --version' and verify no lingering credentials are cached in ~/.docker/config.json

FAQ

What is CVE-2026-24845?

This vulnerability allows malicious OCI image registries to redirect Docker credential authentication requests to attacker-controlled servers, potentially exposing stored registry credentials. The flaw exists in how Docker handles WWW-Authenticate header redirects during image pulls.

Is CVE-2026-24845 being actively exploited?

No, this vulnerability is not currently listed on the CISA KEV catalog and no public exploits are available, but the medium severity (CVSS 6.5) and credential exposure risk warrant prompt patching.

What versions of Docker are affected by CVE-2026-24845?

Docker versions 0.10.0 through 1.20.2 are vulnerable; version 1.20.3 and later include the fix.

How do I check if my server is vulnerable to CVE-2026-24845?

Run 'docker --version' and compare the output to 1.20.3; if your version is lower, you are affected. You can also check 'docker inspect' on running containers to identify if OCI image scanning is in use.

Does Defensia detect CVE-2026-24845?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Docker is installed on a monitored server, CVE-2026-24845 will appear in your dashboard with remediation steps.

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CVE-2026-53576CVSS 10Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter("/api/v1/**")) treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresses its resources by URL path segments that the caller chooses (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). An anonymous caller picks the literal configs as the final segment, and the request bypasses Basic-Auth entirely. Because the bypass reaches the flow-create and execution-trigger routes, an unauthenticated caller creates a flow containing a Shell or Process task and runs it. The task executes as root inside the kestra container. The official docker-compose.yml mounts /var/run/docker.sock, so root in the container reaches the host Docker daemon. This vulnerability is fixed in 1.0.45 and 1.3.21.
CVE-2026-44182CVSS 10Jupyter Enterprise Gateway launches remote Jupyter Notebook kernels across distributed clusters like Apache Spark, Kubernetes, and Docker Swarm. In versions prior to 3.3.0, the server interpolates untrusted environment variables (e.g., KERNEL_XXX) into Kubernetes manifests without YAML-aware escaping, enabling YAML injection attacks. Attackers can inject new fields, overwrite critical fields (e.g., duplicate securityContext keys, where the last one prevails), and inject document boundaries (--- for new documents, ... for end-of-document) to generate multiple resources, potentially creating arbitrary types, such as privileged pods. The Jinja2 template for the Kubernetes manifest contains several kernel_xxx variables, such as kernel_working_dir that are used when rendering the manifest and are all vectors for YAML injection. This issue has been fixed in version 3.3.0.
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References

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