CVE-2026-44939
Command injection through unsanitized YAML parameter in Rancher
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.
INFO
Published Date :
June 19, 2026, 12:13 p.m.
Last Modified :
June 19, 2026, 12:13 p.m.
Remotely Exploit :
Yes !
Source :
suse
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 404e59f5-483d-4b8a-8e7a-e67604dd8afb | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Rancher Manager to version 2.14.2 or later.
- Apply vendor-provided patches for the cluster import endpoint.
- Sanitize all YAML parameters processed by the import endpoint.
- Restrict access to the import endpoint.
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CVE-2026-44939 vulnerability anywhere in the article.