Detect2Shell is a detector for authorised security testing. Only run it against systems you own or have explicit, written permission to test. Even its passive checks send requests to the target, and unauthorised scanning is unlawful in many jurisdictions. You alone are responsible for how you use it.

Detect2Shell proves exposure and stops. It ships no weaponised primitive: no webshell or file write, no rogue JNDI/class server, no prototype-pollution gadget, no memory-corruption control payload, no out-of-memory or crash trigger, and no memory-disclosure read. Its out-of-band canary answers with a single fixed string and records nothing but the fact that a callback arrived. See "Safety by design" in the README for the detail.

Provided as-is under the MIT licence, with no warranty. The authors accept no liability for any damage, disruption or legal consequence arising from its use or misuse. Nothing here makes unauthorised testing lawful.

Results are best-effort and are not a guarantee. A clean or not detected result is not proof that a target is safe: the tool probes a limited surface and can miss real exposure. Do not rely on it as the sole basis for deciding a system is unaffected; confirm component versions host-side.

If you find a security issue in the tool itself (as opposed to in a target you are scanning), please report it privately rather than opening a public issue:

• Use GitHub's private vulnerability reporting on the repository (Security -> Report a vulnerability); or
• if that is unavailable, open a minimal public issue asking for a private channel, without exploit detail.

Please include the version, your platform and Python version, and the steps to reproduce. We aim to acknowledge reports promptly and will credit reporters who ask to be credited.

Detect2Shell is alpha (0.x). Fixes land on the latest release only.