CVE-2026-15809
HIGHCRI-O - HOME Environment Variable /etc/passwd Injection
Title source: manualDescription
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.
References (5)
Core 5
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-15809
Technical Description, X_Refsource_Redhat technical-description
x_refsource_redhat
cve-2022-4318
https://access.redhat.com/security/cve/cve-2022-4318
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2500846
https://bugzilla.redhat.com/show_bug.cgi?id=2500846
Scores
CVSS v3
7.8
EPSS
0.0013
EPSS Percentile
2.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-116
CWE-134
Status
published
Products (2)
Red Hat/Confidential Compute Attestation
Red Hat/Red Hat OpenShift Container Platform 4
Published
Jul 15, 2026
Tracked Since
Jul 15, 2026