CVE-2026-15809Github.com/cri-o/cri-o: fix bypass for cve-2022-4318 — /etc/passwd injection via home env
Updated under an hour ago ()
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It affects Red Hat OpenShift Container Platform 4.12 and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-134, CWE-116
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat OpenShift Container Platform 4.12 redhat:openshift | from 0:1.25.5-36.rhaos4.12.git2e7f657.el8 not affected | CNA record |
Red Hat Red Hat OpenShift Container Platform 4.22 redhat:openshift_ironic | from 0:1.35.6-5.rhaos4.22.git41f610b.el9 not affected | CNA record |
Red Hat Confidential Compute Attestation redhat:confidential_compute_attestation | 1 | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:57361vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60444vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60449vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60452vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:62548vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65838vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65906vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:66385vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:67836vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:67856vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:70585vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-15809vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2500846issue-tracking, x-refsource-redhat
- https://github.com/cri-o/cri-o/pull/6450
- https://github.com/cri-o/cri-o/pull/6524
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.