Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2026-15809
- https://bugzilla.redhat.com/show_bug.cgi?id=2500846
- https://github.com/cri-o/cri-o/pull/6450
- https://github.com/cri-o/cri-o/pull/6524
FAQ
What is CVE-2026-15809?
CVE-2026-15809 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 injec...
How severe is CVE-2026-15809?
CVE-2026-15809 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-15809?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.