CVE-2026-15809highCWE-116CWE-134

CVE-2026-15809: high-severity vulnerability in Red Hat Confidential Compute Attestation

Github.com/cri-o/cri-o: fix bypass for cve-2022-4318 — /etc/passwd injection via home env

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Confidential Compute AttestationRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat OpenShift Container Platform 4.12Red Hat · Red Hat OpenShift Container Platform 4.13Red Hat · Red Hat OpenShift Container Platform 4.14Red Hat · Red Hat OpenShift Container Platform 4.15Red Hat · Red Hat OpenShift Container Platform 4.16Red Hat · Red Hat OpenShift Container Platform 4.17Red Hat · Red Hat OpenShift Container Platform 4.18Red Hat · Red Hat OpenShift Container Platform 4.19Red Hat · Red Hat OpenShift Container Platform 4.20Red Hat · Red Hat OpenShift Container Platform 4.21Red Hat · Red Hat OpenShift Container Platform 4.22Red Hat · Red Hat OpenShift Container Platform 5
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