CVE-2024-28224

NVIDIA NemoClaw Flaw Lets Malicious Webpage Hijack Local Ollama Models via DNS Rebinding

Oasis Security disclosed a critical attack chain in NVIDIA NemoClaw that allows a malicious webpage to silently take over a local Ollama instance and poison AI model chat templates. The vulnerability stems from NemoClaw binding Ollama to 0.0.0.0:11434 on Windows without authentication, combined with skipped Host header checks and permissive CORS. Attackers use DNS rebinding to reach the local API from the browser and then inject persistent hidden instructions through the /api/create endpoint by modifying Go templates. These poisoned templates append attacker commands to every system message and survive across sessions and new prompts. No CVE has been assigned and no official patch exists, though version v0.0.106 added an incomplete bind check that can be disabled via environment variable. The issue revives a similar problem previously fixed in Ollama under CVE-2024-28224. Oasis Security notes this marks their third successful compromise of local AI agents using the same browser-to-local-API pattern.