{"id":"GHSA-8m2g-8cgm-3vcp","revision":"17e239ec3a4e41af9fc146fc907bbc9f","records":[{"revision":"17e239ec3a4e41af9fc146fc907bbc9f","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-8m2g-8cgm-3vcp","aliases":["CVE-2026-82533"],"title":"DeepSeek Harness contains an authentication bypass vulnerability in local HTTP control-plane API","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.","state":0,"publishedAt":"2026-09-08T18:32:01+00:00","modifiedAt":"2026-10-07T21:00:04.3492456+00:00","affected":[{"ecosystem":"npm","name":"@deepseek-ai/dsh-client-connection","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.1.2-alpha.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"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","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-82533","https://github.com/deepseek-ai/deepseek-harness/commit/3e24087bfaeabe40b58ba2f7b936895b8f93fe27","https://github.com/deepseek-ai/deepseek-harness","https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.1","https://www.ox.security/blog/cve-2026-82533-deepseek-harness-ai-agent-sandbox-escape","https://www.vulncheck.com/advisories/deepseek-harness-alpha-1-authentication-bypass-via-host-header-spoofing"],"sourceUrl":"https://github.com/advisories/GHSA-8m2g-8cgm-3vcp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-8m2g-8cgm-3vcp","identifiers":["GHSA-8m2g-8cgm-3vcp","CVE-2026-82533"]},"retained":false,"historicalAffected":[]}],"coverage":[]}