CVE-2026-15809
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.8
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS probability
- 0.16%
- CWE
- CWE-134
- Published
- 2026-07-15
- Last modified
- 2026-09-02
Affected products
- Red Hat Red Hat OpenShift Container Platform 4.22
- Red Hat Red Hat OpenShift Container Platform 4.20
- Red Hat Red Hat OpenShift Container Platform 4.21
- Red Hat Red Hat OpenShift Container Platform 4.19
Weakness type
Related vulnerabilities
- CVE-2026-69395 — Active Directory Certificate Services (AD CS) Information Disclosure Vulnerability
- CVE-2026-16821 — Vulnerabilities in IBM AIX and PowerVM VIOS
- CVE-2026-81574 — Format String Vulnerability in Logger
- CVE-2026-63073 — Untrusted Sender DN Used as Format String in CMP Response Validation
- CVE-2026-17136 — Vulnerabilities in IBM AIX and PowerVM VIOS
- CVE-2026-68553 — Coturn: Format String Injection via TURN USERNAME/REALM into hiredis Redis Command
- CVE-2026-15961 — Power System Information Disclosure
- CVE-2026-12004 — Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access