CVE-2026-82533

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Source
https://cve.org/CVERecord?id=CVE-2026-82533
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82533.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-82533
Published
2026-09-08T16:59:47Z
Modified
2026-09-10T03:48:41Z
Severity
  • 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 < 0.1.2-alpha.1 Authentication Bypass via Host Header Spoofing
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 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-807"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82533.json"
}
References

Affected packages

Git / github.com/deepseek-ai/deepseek-harness

Affected ranges

Type
GIT
Repo
https://github.com/deepseek-ai/deepseek-harness
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
cd5ef8148158c3a752a658978873241fdf8e2bbc
Fixed
3e24087bfaeabe40b58ba2f7b936895b8f93fe27
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.1.2-alpha.1"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

dsh-v0.*
dsh-v0.1.0-rc.7
dsh-v0.1.0-rc.8
dsh-v0.1.1-rc.1
dsh-v0.1.1-rc.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82533.json"