A flaw was found in CRI-O. The fix for a previous vulnerability (CVE-2022-4318) was incorrect, allowing it to be bypassed. An attacker capable of setting environment variables on a container can inject a newline character into the HOME environment variable. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.
History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.20::el8
cpe:/a:redhat:openshift:4.20::el9
cpe:/a:redhat:openshift:4.21::el9
References

Tue, 25 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Ironic
CPEs cpe:/a:redhat:openshift:4.22::el8
cpe:/a:redhat:openshift:4.22::el9
cpe:/a:redhat:openshift_ironic:4.22::el9
Vendors & Products Redhat openshift Ironic
References

Sun, 02 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform

Thu, 16 Jul 2026 06:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-134
References

Wed, 15 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-116
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 15 Jul 2026 13:00:00 +0000

Type Values Removed Values Added
Title cri-o: Fix Bypass for CVE-2022-4318 — /etc/passwd Injection via HOME env Github.com/cri-o/cri-o: fix bypass for cve-2022-4318 — /etc/passwd injection via home env
First Time appeared Redhat
Redhat confidential Compute Attestation
Redhat openshift
CPEs cpe:/a:redhat:confidential_compute_attestation:1
cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat confidential Compute Attestation
Redhat openshift
References

Wed, 15 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in CRI-O. The fix for a previous vulnerability (CVE-2022-4318) was incorrect, allowing it to be bypassed. An attacker capable of setting environment variables on a container can inject a newline character into the HOME environment variable. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.
Title cri-o: Fix Bypass for CVE-2022-4318 — /etc/passwd Injection via HOME env
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-01T19:55:44.952Z

Reserved: 2026-07-15T09:57:48.452Z

Link: CVE-2026-15809

cve-icon Vulnrichment

Updated: 2026-07-15T13:06:18.426Z

cve-icon NVD

Status : Deferred

Published: 2026-07-15T13:17:03.933

Modified: 2026-09-01T20:17:12.150

Link: CVE-2026-15809

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-15T10:18:17Z

Links: CVE-2026-15809 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T20:15:13Z