CVE-2026-76061: CRI-O bind_mount_prefix symlink privilege escalation

CVE-2026-76061 · Severity: medium · CVSS 5.5 · Published 2026-10-06

CRI-O is a container runtime that manages containerized applications in Kubernetes environments. When configured with a bind_mount_prefix, a malicious container or local attacker can exploit symlink handling to access files outside the intended directory boundaries, potentially escalating privileges or reading sensitive files on the host system.

Technologies: CRI-O. Vendors: CRI-O.

Quick answers

Is CVE-2026-76061 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-76061 being exploited in the wild.
How severe is CVE-2026-76061?
Medium severity, with a CVSS score of 5.5, published 6 October 2026.
Which products and versions are affected?
CRI-O CRI-O.
Is there a fix for CVE-2026-76061?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-76061 attacked?
It is attacked with local access, in a hosted service.
Am I affected by CVE-2026-76061?
Check whether you run CRI-O. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

CRI-O's bind_mount_prefix feature fails to properly validate intermediate absolute symlinks in hostPath volume mounts, allowing symlink traversal attacks. An attacker with container or local host access can craft a hostPath with an intermediate symlink that resolves outside the prefixed root directory, bypassing namespace isolation. The vulnerability requires the bind_mount_prefix to be explicitly configured (non-empty), and grants file access or privilege escalation on the host.

Affected products

  • CRI-O CRI-O

Timeline

  • 2026-10-06: disclosed

References

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