CVE-2025-29774 PoC — xml-crypto Vulnerable to XML Signature Verification Bypass via Multiple SignedInfo References

Source

https://github.com/demining/Phantom-Signature-Attack

Associated Vulnerability

Title: xml-crypto Vulnerable to XML Signature Verification Bypass via Multiple SignedInfo References (CVE-2025-29774)
Description:xml-crypto is an XML digital signature and encryption library for Node.js. An attacker may be able to exploit a vulnerability in versions prior to 6.0.1, 3.2.1, and 2.1.6 to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker with a valid account to escalate privileges or impersonate another user. Users of versions 6.0.0 and prior should upgrade to version 6.0.1 to receive a fix. Those who are still using v2.x or v3.x should upgrade to patched versions 2.1.6 or 3.2.1, respectively.

Description

Phantom Signature Attack: An Analysis of the Critical Vulnerability CVE-2025-29774 in the Bitcoin Protocol, SIGHASH_SINGLE Implementation Flaws, and the Mathematical Framework for Private Key Recovery in Lost Cryptocurrency Wallets Enabling Unrestricted Control over BTC Assets

File Snapshot

Remarks

1. It is advised to access via the original source first.

2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.

View subscription plans →