Rancher vulnerable to command injection through unsanitized YAML parameter
Critical vendor advisory
CVE-2026-44939
Summary
Rancher vulnerable to command injection through unsanitized YAML parameter
Why it matters
GitHub has published a reviewed security advisory for github.com/rancher/rancher. Prioritize it with other application dependency updates, especially because EPSS places it in the 62% percentile.
Operator check
Check whether github.com/rancher/rancher is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.4. EPSS probability: 1.1%; percentile: 62%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.