Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
7/ DeepSeek Harness bug let local apps drive agents CVE-2026-82033: its web control plane had no login. Any local program could run its shell tools and approve its own requests. My move: update to 0.1.2-alpha.2 and rotate its model keys. https://github.com/advisories/GHSA-h3m7-c9pq-7995
CVE-2026-82033: DeepSeek Harness local RPC had no auth. Any local process could drive tools with your model creds and answer approval prompts via the ungated event stream. Fixed in 0.1.2-alpha.2. An approval UI isn't a control if something else can click yes.
CVE-2026-82033 (DeepSeek Harness): web local do agente aceitava RPC sem auth. Qualquer processo na máquina rodava as tools e aprovava prompts sozinho (CVSS 8.6). Localhost não é segurança. Trata a UI do agente como superfície de ataque? https://theinjection.dev/items/deepseek-harness-unauth-web-rpc-tool-execution/ #IA #Seguranca https://t.co/lylPwesvn2
GHSA-h3m7-c9pq-7995: https://github.com/advisories/GHSA-h3m7-c9pq-7995 NVD CVE-2026-82033: https://nvd.nist.gov/vuln/detail/CVE-2026-82033