CVE-2026-33891
Full vulnerability record from the local CVENow database.
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, a Denial of Service (DoS) vulnerability exists in the node-forge library due to an infinite loop in the BigInteger.modInverse() function (inherited from the bundled jsbn library). When modInverse() is called with a zero value as input, the internal Extended Euclidean Algorithm enters an unreachable exit condition, causing the process to hang indefinitely and consume 100% CPU. Version 1.4.0 patches the issue.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-03-27 21:17:25.817000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
{
"id": "CVE-2026-33891",
"sourceIdentifier": "[email protected]",
"published": "2026-03-27T21:17:25.817",
"lastModified": "2026-10-26T22:10:00.163",
"vulnStatus": "Modified",
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"value": "Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, a Denial of Service (DoS) vulnerability exists in the node-forge library due to an infinite loop in the BigInteger.modInverse() function (inherited from the bundled jsbn library). When modInverse() is called with a zero value as input, the internal Extended Euclidean Algorithm enters an unreachable exit condition, causing the process to hang indefinitely and consume 100% CPU. Version 1.4.0 patches the issue."
},
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"value": "Forge (también llamado ’node-forge’) es una implementación nativa de Transport Layer Security en JavaScript. Antes de la versión 1.4.0, existe una vulnerabilidad de denegación de servicio (DoS) en la biblioteca node-forge debido a un bucle infinito en la función BigInteger.modInverse() (heredada de la biblioteca jsbn incluida). Cuando se llama a modInverse() con un valor cero como entrada, el Algoritmo Extendido de Euclides interno entra en una condición de salida inalcanzable, haciendo que el proceso se cuelgue indefinidamente y consuma el 100% de la CPU. La versión 1.4.0 corrige el problema."
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