Vulnerability in github.com/kata-containers/kata-containers (CVE-2026-44210)
Summary
Vulnerability in github.com/kata-containers/kata-containers (CVE-2026-44210). Successful exploitation can lead to full system takeover. Exploitable via kernel_params. Mitigation: upgrade to 0.0.0-20260519062212-ffa59ce3aa78 or later.
Original description
The description as published by the source.
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd process through the io.katacontainers.config.hypervisor.virtio_fs_extra_args pod annotation. By injecting -o source=/ along with --no-announce-submounts and --sandbox=none, an attacker can override the virtiofsd shared directory to serve the entire host root filesystem into the guest VM. Combined with the kernel_params annotation (also enabled by default) to activate the agent debug console, the attacker can mount the host filesystem from inside the VM and read or write any file on the host, including /etc/shadow. Version 3.31.0 patches the issue.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-44210 has been found in github.com/kata-containers/kata-containers.
Attackers can target a specific entry point like kernel_params over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 9.9/10.
What to do: upgrade github.com/kata-containers/kata-containers to 0.0.0-20260519062212-ffa59ce3aa78 or later.
If unsure, ask your IT team or search "github.com/kata-containers/kata-containers CVE-2026-44210" on the vendor's site.
CVE-2026-44210 (github.com/kata-containers/kata-containers) — CWE-88 / CVSS v3 9.9
Attack vector: remote (network-reachable) / no user interaction
Attack surface: kernel_params / virtio_fs_extra_args
Patched: 0.0.0-20260519062212-ffa59ce3aa78 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-88) exists in github.com/kata-containers/kata-containers. Attackers reach the vulnerable code path via kernel_params.
Check the vendor advisory for the affected versions of github.com/kata-containers/kata-containers. Attack surface: kernel_params / virtio_fs_extra_args.
Severity: Critical (CVSS 9.9/10). Successful exploitation can lead to full system takeover.
Update to 0.0.0-20260519062212-ffa59ce3aa78.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/kata-containers/kata-containers' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/kata-containers/kata-containers' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/kata-containers/kata-containersを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/kata-containers/kata-containers to 0.0.0-20260519062212-ffa59ce3aa78ステージング環境で 0.0.0-20260519062212-ffa59ce3aa78 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- web github.com