Ysoserial-0.0.4-all.jar Download [upd] [2026]

While 0.0.4 is an older release, it is frequently cited in legacy tutorials and CTF (Capture The Flag) write-ups. Modern environments may have patched these specific gadget chains, so it is often better to use the latest version from the GitHub master branch to access newer gadgets like CommonsBeanutils1 Security Warning ysoserial is a powerful exploitation tool.

Total. Attackers can modify or delete any data on the system. ysoserial-0.0.4-all.jar download

: Later updates to this version added support for PostgreSQL and Apache Derby Slave RCE. While 0

Or with curl :

Note: As this is a penetration testing tool, it is commonly flagged by antivirus software. Use it only in authorized, educational, or controlled testing environments. While 0.0.4 is an older release

// Deserialization ois.readObject();