CVE-2026-44939
CVE-2026-44939 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-95.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.4)
- EPSS exploit prediction: 1% (66th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-38009
- Weakness: CWE-95
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-44939?
- 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.
- How severe is CVE-2026-44939?
- CVE-2026-44939 has a CVSS 4.0 base score of 9.4, rated critical severity.
- Is CVE-2026-44939 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-44939?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-44939 have an EU (EUVD) identifier?
- Yes. CVE-2026-44939 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38009.
- When was CVE-2026-44939 published?
- CVE-2026-44939 was published on 2026-06-19 and last updated on 2026-06-24.
References
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