XRP Ledger's Payment Engine Had a Counterfeiting Bug Hidden Since 2015

A decade-old flaw in the payment engine

Decrypt reported on October 12, 2026 that the XRP Ledger's payment engine contained a counterfeiting bug that had gone undetected since 2015. The XRP Ledger is the blockchain network that processes XRP transactions, and its payment engine is the core system that handles the movement of XRP between accounts.

The headline describes the bug as one that could allow counterfeit or fraudulent token creation, but the full technical details of how the flaw worked, who found it, and how it was fixed were not available in the source material provided to this summary.

Key points

• The bug existed in the XRP Ledger's payment engine, the system responsible for processing XRP transfers.
• The issue went undetected from 2015 until it was reported by Decrypt on October 12, 2026.
• The headline characterizes the bug as enabling counterfeiting, though the specific mechanics were not included in the available source content.

What is still unclear

The supplied source material consisted only of the article headline and publication metadata. The following details were not available and cannot be confirmed from the material at hand:

• How the bug was discovered and by whom.
• Whether the bug was ever exploited on the live network.
• The severity of potential financial or security impact.
• Whether Ripple or the XRP Ledger team has issued an official response or patch.
• The specific technical mechanism behind the counterfeiting capability.

Sources

• Decrypt