CVE-2026-73802
Published:October 03, 2026
Updated:October 05, 2026
act_runner appends workflow-controlled "jobs.<job>.container.options" directly to the Docker HostConfig for the job container. When runner privileged mode is disabled, only "Privileged" is forced false. Host namespace flags, capability expansion, and security profile overrides from workflow YAML are preserved in the final HostConfig. A workflow author can enter host PID/IPC namespaces and execute commands on the runner host as root.
Affected Packages
gitea.com/gitea/runner (GO):
Affected version(s) >=v0.4.2-0.20260424125945-fbd631692892 <v1.0.9-0.20260731160927-34bfa1915022Fix Suggestion:
Update to version v1.0.9-0.20260731160927-34bfa1915022https://gitea.com/gitea/runner.git (SCM_GIT):
Affected version(s) >=v0.5.0 <v3.0.0Fix Suggestion:
Update to version v3.0.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Privilege Management