---
id: CVE-2026-82033
title: DeepSeek Harness Unauthenticated RPC Command Execution
summary: >-
  DeepSeek Harness prior to 0.1.2-alpha.2, and specifically commit 3e24087,
  contains a missing authentication vulnerability in its web profile HTTP and
  WebSocket RPC control plane, allowing any local process, including those
  running as a d…
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-306
vendor: deepseek-ai
product: deepseek-harness
affected:
  - deepseek-harness < 0.1.2-alpha.2
  - deepseek-harness <= 3e24087bfaeabe40b58ba2f7b936895b8f93fe27
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-04T20:32:08.543309Z'
published: '2026-11-04'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T20:32:21.214Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82033'
references:
  - url: >-
      https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.2
    label: Fixed Release Tag
  - url: >-
      https://github.com/deepseek-ai/deepseek-harness/commit/3e24087bfaeabe40b58ba2f7b936895b8f93fe27
    label: Patch Commit
  - url: >-
      https://www.vulncheck.com/advisories/deepseek-harness-unauthenticated-rpc-command-execution
    label: 'VulnCheck Advisory: DeepSeek Harness Unauthenticated RPC Command Execution'
tags:
  - cve.org
ingestedAt: '2026-11-05T21:36:00.561Z'
epss: 0.0022
epssPercentile: 0.12629
---

## Overview

DeepSeek Harness prior to 0.1.2-alpha.2, and specifically commit 3e24087, contains a missing authentication vulnerability in its web profile HTTP and WebSocket RPC control plane, allowing any local process, including those running as a different OS user, to reach unauthenticated session methods such as session.create and session.prompt. Attackers can invoke session.prompt to trigger the agent's bash and filesystem tools, achieve arbitrary command execution as the victim user using their configured model credentials, intercept live session traffic and logs over the event mux stream, and bypass human tool-approval checks via POST /api/respond by matching only rpcId, approvalId, and sessionId values broadcast over the ungated stream.

## Affected

- `deepseek-harness < 0.1.2-alpha.2`
- `deepseek-harness <= 3e24087bfaeabe40b58ba2f7b936895b8f93fe27`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.