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.
Project Subscriptions
No data.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 08 Sep 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | DeepSeek Harness < 0.1.2-alpha.1 Authentication Bypass via Host Header Spoofing | |
| Weaknesses | CWE-807 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-08T17:21:11.199Z
Reserved: 2026-08-29T17:20:57.082Z
Link: CVE-2026-82533
No data.
Status : Deferred
Published: 2026-09-08T17:18:36.887
Modified: 2026-09-08T19:53:13.400
Link: CVE-2026-82533
No data.
OpenCVE Enrichment
No data.
Weaknesses