CVE-2026-15809
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Openshift 4.12
PublishedJul 15, 2026
First seenJul 15, 2026
Weakness typeCWE-134CWE-134
How to fix
Vendor advisories
- 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
- access.redhat.com/errata/RHSA-2026:70585
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openshift 4.12 | No range specified | — |
| openshift 4.13 | No range specified | — |
| openshift 4.14 | No range specified | — |
| openshift 4.15 | No range specified | — |
| openshift 4.16 | No range specified | — |
| openshift 4.17 | No range specified | — |
| openshift 4.18 | No range specified | — |
| openshift 4.19 | No range specified | — |
| openshift 4.20 | No range specified | — |
| openshift 4.21 | No range specified | — |
| openshift 4.22 | No range specified | — |
| Red Hat Confidential Compute Attestation | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 4 | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 5 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.