## Node-Forge 1.4.0 Patches Critical DoS Flaw (CVE-2026-33891) in `BigInteger.modInverse()`
A critical security update for the widely-used `node-forge` cryptography library patches a high-severity Denial of Service (DoS) vulnerability that could cause indefinite process hangs. The flaw, tracked as CVE-2026-33891, resides in the `BigInteger.modInverse()` function, which is inherited from the bundled `jsbn` library. When this function is called with a zero value as input, the internal Extended Euclidean Algorithm enters an unreachable exit condition, causing the process to consume 100% CPU and hang indefinitely.

The vulnerability, rated HIGH severity, was reported by a researcher known as Kr0emer. The `node-forge` library, maintained by Digital Bazaar, is a fundamental JavaScript implementation of cryptographic tools for TLS and other networking protocols, making it a critical dependency for countless Node.js applications and web services. The flaw's presence in a core mathematical function used for modular inverse calculations represents a significant risk to system stability.

The release of version 1.4.0 on March 24, 2026, addresses this specific security issue. Developers and security teams managing applications that depend on `node-forge` versions prior to 1.4.0 are under immediate pressure to update their dependencies. Failure to patch could leave systems vulnerable to targeted attacks designed to trigger the infinite loop, leading to service outages and resource exhaustion. This update underscores the persistent security risks embedded within foundational cryptographic dependencies and the supply chain.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: CVE-2026-33891, Denial of Service, Node.js, Cryptography, Supply Chain Security
- **Credibility**: unverified
- **Published**: 2026-03-29 02:27:00
- **ID**: 39454
- **URL**: https://whisperx.ai/en/intel/39454