"The attacker then leverages Ollama's built-in model push feature to exfiltrate the resulting file - complete with stolen heap data - to an attacker-controlled server. The entire attack requires only three unauthenticated API calls."
"With approximately 300,000 Ollama servers currently exposed on the public internet, this vulnerability is immediately and broadly exploitable - no credentials required."
"Depending on how Ollama is used, successful exploitation of Bleeding Llama could expose employee interactions, development code, routed tool outputs, and prompts containing PII, PHI, and other sensitive information."
"Any deployment where Ollama is network-accessible without a firewall or authentication proxy in front of it is at risk of exploitation."
A critical vulnerability in Ollama, tracked as CVE-2026-7482, exposes around 300,000 deployments to sensitive information theft. The issue, dubbed Bleeding Llama, allows attackers to exploit a heap out-of-bounds read to access sensitive data stored in memory. This includes prompts, messages, and environment variables such as API keys and tokens. The vulnerability is particularly concerning as Ollama runs without authentication by default and listens on all network interfaces, making it easily exploitable by attackers with no credentials required.
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