CVE-2026-100838

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'.

• CWE-59

• https://github.com/edgelesssys/contrast/security/advisories/GHSA-rh99-wc69-c255
• https://www.vulncheck.com/advisories/contrast-before-1.19.1-copyfile-policy-symlink-subversion

Published

Sep 27, 2026

Last Modified

Sep 27, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-10083The APCu Manager WordPress plugin before 4.5.0 does not esca…7.5
• CVE-2026-100833Contrast (edgelesssys/contrast) versions 1.14.0 before 1.23.…8.2
• CVE-2026-100834http4k's Digest authentication module (org.http4k:http4k-sec…5.9
• CVE-2026-100835Contrast before 1.16.0 is susceptible to remote attestation …7.4
• CVE-2026-100836Contrast through 1.20.0 contains a panic vulnerability in th…4.3
• CVE-2026-100837Contrast (Edgeless Systems) through 1.20.0 performs unanchor…3.7
• CVE-2026-100839Contrast is a confidential-computing runtime for Kubernetes.…8.4
• CVE-2026-100840MONAI through 1.6.0 contains a remote code execution vulnera…7.8
• CVE-2026-100841In MONAI 1.6.0, PersistentDataset (monai/data/dataset.py) ex…7.8
• CVE-2026-100842MONAI through 1.6.0 contains an eval injection vulnerability…7
• CVE-2026-100843MONAI versions before 1.6.0 contain a remote code execution …7.8
• CVE-2026-100844MONAI before 1.6.0 is vulnerable to OS command injection in …8.4