CVE-2026-44939

Command injection through unsanitized YAML parameter in Rancher

Published Jun 19, 2026 CVSS 4.0 · 9.4 Critical EPSS 1.3% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

SUSE

Rancher

unaffected

Version	Status	Constraints
`2.14.0`	affected	< 2.14.2
`2.13.0`	affected	< 2.13.6
`2.12.0`	affected	< 2.12.10
`2.11.0`	affected	< 2.11.14
`2.10.0`	affected	< 2.10.12

No data.

Vendor Product Versions

Suse

Rancher

Version	Status	Scheme	Platform
`[2.14.0,2.14.2)`	affected	semver	—
`[2.13.0,2.13.6)`	affected	semver	—
`[2.12.0,2.12.10)`	affected	semver	—
`[2.11.0,2.11.14)`	affected	semver	—
`[2.10.0,2.10.12)`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Github GHSA	GHSA-mhc6-2gfq-xx62	Rancher vulnerable to command injection through unsanitized YAML parameter

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 1.3% (1.279% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://github.com/rancher/rancher/security/advisories/GHSA-mhc6-2gfq-xx62

History

Nov 3, 2026 11:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`	ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jun 22, 2026 3:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jun 19, 2026 6:15 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Suse Suse rancher
Vendors & Products		Suse Suse rancher

Jun 19, 2026 12:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Command injection through unsanitized YAML parameter in Rancher
Weaknesses		CWE-95
References		https://github.com/rancher/rancher/security/advisories/GHSA-mhc6-2gfq-xx62
Metrics		cvssV4_0 `{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}`