CVE-2026-15809A flaw was found in CRI-O.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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, NVD)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
- Not given
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
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/errata/RHSA-2026:65838
- https://access.redhat.com/errata/RHSA-2026:65906
- https://access.redhat.com/errata/RHSA-2026:66385
- https://access.redhat.com/errata/RHSA-2026:67836
- https://access.redhat.com/errata/RHSA-2026:67856
- https://access.redhat.com/errata/RHSA-2026:70585
- 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
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.