CVE-2026-100838
Contrast is a confidential-computing runtime for Kubernetes
- Risk score
- 61/100
- CVSS
- 8.1 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 27 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Contrast is a confidential-computing runtime for Kubernetes. In versions before 1.19.1, the Kata agent policies generated by the Contrast CLI contained a flaw in the CopyFile verification that allowed arbitrary writes to the guest root filesystem. A malicious process on the untrusted host able to connect to the Kata a…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.19.1 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.1 high
- On your watchlist: kubernetes
References
Original description
Contrast is a confidential-computing runtime for Kubernetes. In versions before 1.19.1, the Kata agent policies generated by the Contrast CLI contained a flaw in the CopyFile verification that allowed arbitrary writes to the guest root filesystem. A malicious process on the untrusted host able to connect to the Kata agent VSOCK could issue a series of CopyFile requests to overwrite security-critical files in the guest or trick the workload into disclosing sensitive data, effectively amounting to a full guest takeover. Users unable to upgrade can apply an equivalent rego policy fix passed to 'contrast generate --policy'.
Last activity 27 Sep 2026. Patch Forecast updates every hour.