Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution

Summary

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.

Timeline

1. Oct 8, 2026, 9:49 PM UTCCVE published
2. Oct 9, 2026, 3:00 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 9, 2026, 3:13 PM UTCRecord last updated

Affected versions

• mta/mta-rhel9-operator

  Version range not reported

• migration-toolkit-virtualization/mtv-rhel9-operator

  Version range not reported

• openshift-service-mesh/kiali-rhel9-operator

  Version range not reported

• rhacm2/volsync-operator-bundle

  Version range not reported

• rhacm2/volsync-rhel9

  Version range not reported

• ansible-automation-platform-24/de-minimal-rhel8

  Version range not reported

• ansible-automation-platform-24/de-minimal-rhel9

  Version range not reported

• ansible-automation-platform-24/ee-minimal-rhel8

  Version range not reported

• ansible-automation-platform-24/ee-minimal-rhel9

  Version range not reported

• ansible-automation-platform-24/hub-rhel8

  Version range not reported

• ansible-automation-platform-24/lightspeed-rhel8

  Version range not reported

• ansible-automation-platform-25/ansible-dev-tools-rhel8

  Version range not reported

• ansible-automation-platform-25/de-minimal-rhel8

  Version range not reported

• ansible-automation-platform-25/de-minimal-rhel9

  Version range not reported

• ansible-automation-platform-25/eda-controller-rhel8

  Version range not reported

• ansible-automation-platform-25/ee-minimal-rhel8

  Version range not reported

• ansible-automation-platform-25/ee-minimal-rhel9

  Version range not reported

• ansible-automation-platform-25/hub-rhel8

  Version range not reported

• ansible-automation-platform-25/lightspeed-rhel8

  Version range not reported

• ansible-automation-platform-26/ansible-dev-tools-rhel9

  Version range not reported

• ansible-automation-platform-26/controller-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/de-minimal-rhel9

  Version range not reported

• ansible-automation-platform-26/de-supported-rhel9

  Version range not reported

• ansible-automation-platform-26/eda-controller-rhel9

  Version range not reported

• ansible-automation-platform-26/eda-controller-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/ee-minimal-rhel9

  Version range not reported

• ansible-automation-platform-26/ee-supported-rhel9

  Version range not reported

• ansible-automation-platform-26/gateway-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/hub-rhel9

  Version range not reported

• ansible-automation-platform-26/hub-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/lightspeed-rhel9

  Version range not reported

• ansible-automation-platform-26/lightspeed-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/platform-resource-rhel9-operator

  Version range not reported

• ansible-automation-platform-26/platform-resource-runner-rhel9

  Version range not reported

• ansible-automation-platform-27/aap-cloud-billing-operator-rhel9

  Version range not reported

• ansible-automation-platform-27/ansible-devspaces-rhel9

  Version range not reported

• ansible-automation-platform-27/ansible-dev-tools-rhel9

  Version range not reported

• ansible-automation-platform-27/controller-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/de-minimal-rhel9

  Version range not reported

• ansible-automation-platform-27/de-supported-rhel9

  Version range not reported

• ansible-automation-platform-27/eda-controller-rhel9

  Version range not reported

• ansible-automation-platform-27/eda-controller-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/ee-minimal-rhel9

  Version range not reported

• ansible-automation-platform-27/ee-supported-rhel9

  Version range not reported

• ansible-automation-platform-27/gateway-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/hub-rhel9

  Version range not reported

• ansible-automation-platform-27/hub-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/lightspeed-rhel9

  Version range not reported

• ansible-automation-platform-27/lightspeed-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/metrics-service-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/platform-resource-rhel9-operator

  Version range not reported

• ansible-automation-platform-27/platform-resource-runner-rhel9

  Version range not reported

• ansible-automation-platform-tech-preview/ansible-devspaces-rhel9

  Version range not reported

• ansible-automation-platform-tech-preview/metrics-service-rhel9-operator

  Version range not reported

• ansible-core

  Version range not reported

• ansible-automation-platform/ee-minimal-rhel8

  Version range not reported

• ansible-automation-platform/ee-minimal-rhel9

  Version range not reported

• ansible-automation-platform-tech-preview/ee-minimal-rhel8

  Version range not reported

• ansible-automation-platform-tech-preview/ee-minimal-rhel9

  Version range not reported

• rhcertification/redhat-certification-system-ai

  Version range not reported

• discovery/discovery-server-rhel9

  Version range not reported

• ansible-core

  Version range not reported

• ansible-core

  Version range not reported

• ansible-core

  Version range not reported

• openshift4/ose-ansible-rhel9-operator

  Version range not reported

• openstack-ansible-core

  Version range not reported

• rhoso-operators/ee-openstack-ansible-ee-rhel9

  Version range not reported

• ansible-core

  Version range not reported

• rhui5/installer-rhel9

  Version range not reported

• rhui5/installer-tp-rhel9

  Version range not reported

• rhui5/rhua-rhel9

  Version range not reported

• rhui5/rhua-tp-rhel9

  Version range not reported

• ansible-automation-platform/bootc-automation-portal-rhel9

  Version range not reported

References 2