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CVE-2026-13622 (GCVE-0-2026-13622)

Vulnerability from cvelistv5 – Published: 2026-08-12 20:46 – Updated: 2026-09-08 18:10
VLAI
Title
Kubevirt: virt-handler-rhel9: kubevirt: virt-handler migration proxy follows symlinks allowing container escape to host
Summary
A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. These socket paths reside in qemu-owned directories writable by the virt-launcher user. An attacker with namespace edit and pods/exec permissions can replace a migration proxy socket with a symlink to the host CRI-O socket. Because virt-handler runs as root in the host mount namespace, absolute symlink targets resolve against the host filesystem, and the bidirectional io.Copy proxy relays attacker-controlled bytes to the container runtime, enabling full node compromise.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:21 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
URL Tags
https://access.redhat.com/errata/RHEA-2026:53670 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:51031 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53655 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53671 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53684 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53721 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53728 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53763 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53797 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53826 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53838 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-13622 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2494142 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Container Native Virtualization 4.12 Unaffected: 1785837722 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.12::el8
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.13 Unaffected: 1786346596 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.13::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.14 Unaffected: 1786309624 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.14::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.15 Unaffected: 1786347656 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.15::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.16 Unaffected: 1786030071 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.16::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.17 Unaffected: 1786348529 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.17::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.18 Unaffected: 1786130068 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.18::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.19 Unaffected: 1786334215 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.19::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.2 Unaffected: 1785831334 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.20::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.21 Unaffected: 1785829701 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.21::el9
Create a notification for this product.
Red Hat Red Hat Container Native Virtualization 4.22 Unaffected: 1785140336 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.22::el9
Create a notification for this product.
Date Public
2026-08-12 00:00
Credits
This issue was discovered by Huzaifa Sidhpurwala (Red Hat).
Show details on NVD website
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.