High severity7.8NVD Advisory· Published Jul 15, 2026· Updated Oct 1, 2026
CVE-2026-15809
CVE-2026-15809
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.
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Affected products
2Patches
Vulnerability mechanics
References
15- access.redhat.com/errata/RHSA-2026:57361nvd
- access.redhat.com/errata/RHSA-2026:60444nvd
- access.redhat.com/errata/RHSA-2026:60449nvd
- access.redhat.com/errata/RHSA-2026:60452nvd
- access.redhat.com/errata/RHSA-2026:62548nvd
- access.redhat.com/errata/RHSA-2026:65838nvd
- access.redhat.com/errata/RHSA-2026:65906nvd
- access.redhat.com/errata/RHSA-2026:66385nvd
- access.redhat.com/errata/RHSA-2026:67836nvd
- access.redhat.com/errata/RHSA-2026:67856nvd
- access.redhat.com/errata/RHSA-2026:70585nvd
- access.redhat.com/security/cve/CVE-2026-15809nvd
- bugzilla.redhat.com/show_bug.cginvd
- github.com/cri-o/cri-o/pull/6450nvd
- github.com/cri-o/cri-o/pull/6524nvd
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