CVE-2026-15809 | A flaw was found in CRI-O. The fix for a previous vulnerabil… | CVSS 7.8 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.

Metadata

CVE ID: CVE-2026-15809
State: PUBLISHED
Assigner: redhat
Reserved: 2026-07-15 09:57 UTC
Published: 2026-07-15 12:32 UTC
Last updated: 2026-07-15 13:52 UTC
Primary CWE: CWE-116
CWE-116 Improper Encoding or Escaping of Output
Vendor / Product: Red Hat / Confidential Compute Attestation
Sources: cve.org · NVD

Severity & Metrics

7.8 HIGH CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (4)

Vendor	Product	Platform	Versions
Red Hat	Confidential Compute Attestation	—	—
Red Hat	Red Hat OpenShift Container Platform 4	—	—
Red Hat	Red Hat OpenShift Container Platform 4	—	—
Red Hat	Red Hat OpenShift Container Platform 4	—	—

Weakness (CWE)

CWE	Source	Description
CWE-116	adp	CWE-116 Improper Encoding or Escaping of Output

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.8	HIGH	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References (5)