When read-only mounts in Docker Sandboxes become writable
CVE-2026-18171 reveals a VirtioFS-based bypass in Docker Sandboxes that renders read-only mounts writable, undermining a core container isolation control relied upon in CI/CD and production environments.
Summary written by editorial AI · Source link below
CVE-2026-18171 is a read-only mount bypass in Docker Sandboxes, where a second VirtioFS path let sandboxed code write to files marked read-only. Category: Vulnerabilities & Threats
Editorial Analysis
Enterprises using Docker Sandboxes as a security boundary in CI/CD or multi-tenant environments may have weaker isolation than assumed, creating lateral movement and data integrity risks.
Patch affected Docker Sandbox versions and validate that no production or CI/CD workloads rely solely on read-only mounts for security enforcement.
A Docker container isolation bypass means sandboxed workloads may not be as contained as assumed — patching is urgent.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
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