VulnerabilityDeferred
CVE-2026-15809
The fix for a previous vulnerability (CVE-2022-4318) was incorrect, allowing it to be bypassed.
HIGH 7.8EPSS 0.17%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.17% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-134, CWE-116
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:57361
- https://access.redhat.com/errata/RHSA-2026:60444
- https://access.redhat.com/errata/RHSA-2026:60449
- https://access.redhat.com/errata/RHSA-2026:60452
- https://access.redhat.com/errata/RHSA-2026:62548
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.