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Red Hat, Inc.

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high advisory

CRI-O Environment Variable Injection Vulnerability (CVE-2026-15809)

A critical vulnerability, CVE-2026-15809, in CRI-O allows an attacker with the ability to set container environment variables to bypass a previous fix (CVE-2022-4318), inject a newline character into the HOME environment variable, and add arbitrary lines to /etc/passwd, potentially leading to privilege escalation or persistence within the container.

CRI-O +2 container linux vulnerability privilege-escalation persistence
1r 1t 2c