Critical severity · published Jun 19, 2026
CVE-2026-44939
Command injection through unsanitized YAML parameter in Rancher
9.4
CVSS
1.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Rancher · SUSE
2.14.0 before 2.14.2; 2.13.0 before 2.13.6; 2.12.0 before 2.12.10; 2.11.0 before 2.11.14; 2.10.0 before 2.10.12 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44939
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44939
github.com
https://github.com/rancher/rancher/security/advisories/GHSA-mhc6-2gfq-xx62
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