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.
References10
- access.redhat.com/errata/RHSA-2026:57361
- access.redhat.com/errata/RHSA-2026:60444
- access.redhat.com/errata/RHSA-2026:60449
- access.redhat.com/errata/RHSA-2026:60452
- access.redhat.com/errata/RHSA-2026:62548
- access.redhat.com/errata/RHSA-2026:65838
- access.redhat.com/errata/RHSA-2026:65906
- access.redhat.com/errata/RHSA-2026:66385
- access.redhat.com/errata/RHSA-2026:67836
- access.redhat.com/errata/RHSA-2026:67856
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 15 November 2026
- CWE
- CWE-134CWE-116
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.