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CVE-2026-116367EUVD-2026-109917

DeepSeek Harness sandbox.ts createContext

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub

Summary

The DeepSeek Harness software, specifically its sandbox component used by the extensions host runner, is affected by a flaw in how it creates its sandbox context. Exploiting this flaw could allow an attacker to break out of or tamper with the sandbox remotely.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

A vulnerability was found in DeepSeek Harness up to 0.1.0-rc.5. This vulnerability affects the function createContext of the file packages/extensions/cordis-host-runner/src/sandbox.ts. The manipulation results in sandbox issue. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • DeepSeek Harness

    0.1.0-rc.0, 0.1.0-rc.1, 0.1.0-rc.2, 0.1.0-rc.3, 0.1.0-rc.4, 0.1.0-rc.5

References 4

VulDB