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Advisory record · GHSA-wwj6-vghv-5p64

Kata Container to Guest micro VM privilege escalation

CVSS 9.4 CriticalCriticalEPSS 0.0024 · 15th percentile

Critical, because:

  • CVSS score 9.4: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 19 Feb 2026, 15:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/kata-containers/kata-containers/src/runtimeGo<0.0.0-20260219090056-6a672503973b0.0.0-20260219090056-6a672503973b
Identifiers
GHSA-wwj6-vghv-5p64 · CVE-2026-24834 · GO-2026-4517
Weakness (CWE)
CWE-281 · CWE-732
Tags
Published
19 Feb 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Kata Containers runtime (Go module github.com/kata-containers/kata-containers/src/runtime) versions up to 0.0.0-20260219090056-6a672503973b are affected. A user with a container that has CAP_MKNOD can write to the guest micro VM's root filesystem through the read-only-intended pmem device, which allows arbitrary code execution as root inside the VM, though the source says the host is not affected. The fixed version is listed as 0.0.0-20260219090056-6a672503973b, so upgrade to that version; the source gives no other workaround.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.4 Critical 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0024, the 15th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.