nanobot — Prompt Injection (CVE-2026-33654)
Date: 2026-03
Affected: nanobot/nanobot
Attack vector: prompt-injection
Category: vulnerability-disclosure
Severity: Critical
CVE: CVE-2026-33654
CWE: CWE-1336
CWE-290
CWE-94
CVSS: 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

nanobot is a personal AI assistant. Prior to version 0.1.6, an indirect prompt injection vulnerability exists in the email channel processing module (`nanobot/channels/email.py`), allowing a remote, unauthenticated attacker to execute arbitrary LLM instructions (and subsequently, system tools) without any interaction from the bot owner. By sending an email containing malicious prompts to the bot's monitored email address, the bot automatically polls, ingests, and processes the email content as highly trusted input, fully bypassing channel isolation and resulting in a stealthy, zero-click attack. Version 0.1.6 patches the issue.


Mitigations:

Architectural layers (MAESTRO):