Attackers Use LLM Agent for Post-Exploitation After Marimo CVE-2026-39987 Exploit

iT4iNT SERVER An unknown threat actor has been observed using a large language model (LLM) agent to conduct post-compromise actions after obtaining initial access following the exploitation of a publicly-accessible Marimo network using a recently disclosed vulnerability.

"The attacker compromised an internet-reachable Marimo notebook via CVE-2026-39987, extracted two cloud credentials from the compromised VDS VPS Cloud


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