CVE-2026-101078: deepseek-ai deepseek-harness Landlock Backend profiles.ts isolation
A vulnerability has been found in deepseek-ai deepseek-harness up to 0.1.7-rc.2. Affected is an unknown function of the file packages/sandbox/sandbox-local/src/profiles.ts of the component Landlock Backend. Such manipulation leads to improper isolation or compartmentalization. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. It is advisable to implement a patch to correct this issue. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed?
deepseek-ai deepseek-harness versions up to and including 0.1.7-rc.2 are affected. The issue is associated with the Landlock Backend, specifically packages/sandbox/sandbox-local/src/profiles.ts.
What access does an attacker need?
Exploitation must be carried out locally and requires low privileges. No user interaction is required.
Is exploitation likely to be practical?
A public exploit disclosure exists and may be used. The provided assessment rates exploit maturity as proof-of-concept.
What should teams do if they use the affected component?
Implement a vendor patch to correct the isolation issue. If patching cannot be performed immediately, prioritize systems where local low-privileged users can access the affected Landlock Backend.