GHSA-8m2g-8cgm-3vcp

Source

https://github.com/advisories/GHSA-8m2g-8cgm-3vcp

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-8m2g-8cgm-3vcp/GHSA-8m2g-8cgm-3vcp.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-8m2g-8cgm-3vcp

Aliases

CVE-2026-82533

Published

2026-09-08T18:32:01Z

Modified

2026-10-07T21:00:04Z

Severity

9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
9.4 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator

Summary

DeepSeek Harness contains an authentication bypass vulnerability in local HTTP control-plane API

Details

DeepSeek Harness before 0.1.2-alpha.1 contains an authentication bypass vulnerability in its local HTTP control-plane API that allows attackers to gain full agent control by supplying a spoofed Host header, as the server validates only the client-supplied Host header value rather than the actual TCP connection origin. Attackers can exploit this flaw to invoke privileged commands such as commands/execute with danger-full-access permissions, escalate session approval policies to unconfined execution, and retrieve all stored conversations without any credential or API key.

Database specific

{
    "cwe_ids": [
        "CWE-807"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T20:41:36Z",
    "nvd_published_at": "2026-09-08T17:18:36Z",
    "severity": "CRITICAL"
}

References

Affected packages

npm / @deepseek-ai/dsh-client-connection

Package

Name: @deepseek-ai/dsh-client-connection; View open source insights on deps.dev
Purl: pkg:npm/%40deepseek-ai/dsh-client-connection

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.1.2-alpha.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-8m2g-8cgm-3vcp/GHSA-8m2g-8cgm-3vcp.json"