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  4. CVE 2026 44939 command injection through unsanitized yaml
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Back to active CVEs
Critical · CVSS 9.4CVE-2026-44939GHSA-MHC6-2GFQ-XX62

Command injection through unsanitized YAML parameter in RancherCVE-2026-44939

Answer in brief

CVE-2026-44939 records a Critical severity (CVSS 9.4) vulnerability in Command injection through unsanitized YAML parameter in Rancher. The current sources do not mark it as known exploited. The current feed maps SUSE/Rancher (generic), github.com/rancher/rancher (go), github.com/rancher/rancher (go), github.com/rancher/rancher (go) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 19, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Jun 19, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.4
Exploitation
Not marked as known exploited
Affected software
13 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SUSE/Rancher (generic), github.com/rancher/rancher (go), github.com/rancher/rancher (go), github.com/rancher/rancher (go) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
SUSE/Ranchergeneric>=2.14.0 <2.14.2 || >=2.13.0 <2.13.6 || >=2.12.0 <2.12.10 || >=2.11.0 <2.11.14 || >=2.10.0 <2.10.122.14.2, 2.13.6, 2.12.10, 2.11.14, 2.10.12
github.com/rancher/ranchergo>=2.11.0,<2.11.142.11.14
github.com/rancher/ranchergo>=2.10.0,<2.10.122.10.12
github.com/rancher/ranchergo<0.0.0-20260617231817-2aa77eb283e70.0.0-20260617231817-2aa77eb283e7
github.com/rancher/ranchergo>=2.14.0,<2.14.22.14.2
github.com/rancher/ranchergo>=2.13.0,<2.13.62.13.6
github.com/rancher/ranchergo>=2.12.0,<2.12.102.12.10
github.com/rancher/ranchergo>=2.14.0 <2.14.22.14.2
github.com/rancher/ranchergo>=2.13.0 <2.13.62.13.6
github.com/rancher/ranchergo>=2.12.0 <2.12.102.12.10
github.com/rancher/ranchergo>=2.11.0 <2.11.142.11.14
github.com/rancher/ranchergo>=2.10.0 <2.10.122.10.12
github.com/rancher/ranchergo>=0 <0.0.0-20260617231817-2aa77eb283e70.0.0-20260617231817-2aa77eb283e7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for SUSE/Rancher, github.com/rancher/rancher, github.com/rancher/rancher.
  2. 2Review the reported fix. Update SUSE/Rancher to 2.14.2; github.com/rancher/rancher to 2.11.14; github.com/rancher/rancher to 2.10.12; github.com/rancher/rancher to 0.0.0-20260617231817-2aa77eb283e7; github.com/rancher/rancher to 2.14.2; github.com/rancher/rancher to 2.13.6; github.com/rancher/rancher to 2.12.10; github.com/rancher/rancher to 2.14.2; github.com/rancher/rancher to 2.13.6; github.com/rancher/rancher to 2.12.10; github.com/rancher/rancher to 2.11.14; github.com/rancher/rancher to 2.10.12; github.com/rancher/rancher to 0.0.0-20260617231817-2aa77eb283e7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jun 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 19, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • NVD vulnerability recordnvd.nist.gov
  • GitHub security advisorygithub.com
Upstream source description

A command injection vulnerability in the Rancher Manager cluster before 2.14.2 import endpoint /v3/import/{token}_{clusterId}.yaml through unsanitized YAML parameters could allow remote attackers to break out of an image, and execute e.g. malicious containers.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Command Injection
EPSS
Not reported
CWE IDs
CWE-95
Source
CVE List V5
Source checked
Nov 3, 2026
References
5 linked sources
Open source record