CVE-2026-82033

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{"bugzilla": {"description": "deepseek-harness: deepseek-harness: Arbitrary command execution via unauthenticated RPC control plane", "id": "2567758", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567758"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-306", "details": ["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.", "A flaw was found in DeepSeek Harness. A missing authentication check in its Remote Procedure Call (RPC) control plane allows an unauthorized local attacker to access internal session interfaces. By interacting with these unauthenticated endpoints, an attacker can bypass human approval safeguards, monitor active session traffic, and execute arbitrary commands with the privileges of the victim user."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-82033", "public_date": "2026-11-04T18:42:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-82033\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-82033\nhttps://github.com/deepseek-ai/deepseek-harness/commit/3e24087bfaeabe40b58ba2f7b936895b8f93fe27\nhttps://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.2\nhttps://www.vulncheck.com/advisories/deepseek-harness-unauthenticated-rpc-command-execution"], "statement": "This vulnerability is rated as Important severity because any unauthenticated local process can interact with the control interface to achieve arbitrary code execution under the victim's account without requiring prior privileges. Although exploitation requires existing local system access, the risk is classified as Important rather than Moderate due to the immediate bypass of approval safeguards and full compromise of confidentiality and integrity within the running user's context. Red Hat products do not distribute or support DeepSeek Harness, so standard enterprise deployments are not affected.", "threat_severity": "Important"}

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