CVE-2026-33891: fallo de gravedad alta en digitalbazaar forge
Forge has Denial of Service via Infinite Loop in BigInteger.modInverse() with Zero Input
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
digitalbazaar · forgeCVEs relacionadas — digitalbazaar forge
En el mismo producto, de las más peligrosas a las menos.
CVE-2022-24772HIGHImproper Verification of Cryptographic Signature in `node-forge`EPSS 1.1%CVE-2022-24773MEDIUMImproper Verification of Cryptographic Signature in `node-forge`EPSS 1.0%CVE-2022-24771HIGHImproper Verification of Cryptographic Signature in node-forgeEPSS 0.8%CVE-2026-118779HIGHForge: Regular expression denial of service in PEM decoding (pem.decode)EPSS 0.6%CVE-2026-33895HIGHForge has signature forgery in Ed25519 due to missing S > L checkEPSS 0.5%CVE-2026-33894HIGHForge has signature forgery in RSA-PKCS due to ASN.1 extra fieldEPSS 0.5%
Referencias
https://access.redhat.com/errata/RHSA-2026:13826https://access.redhat.com/errata/RHSA-2026:24761https://access.redhat.com/errata/RHSA-2026:24762https://access.redhat.com/errata/RHSA-2026:34342https://access.redhat.com/errata/RHSA-2026:9742https://access.redhat.com/security/cve/CVE-2026-33891https://bugzilla.redhat.com/show_bug.cgi?id=2452450https://github.com/digitalbazaar/forge/commit/9bb8d67b99d17e4ebb5fd7596cd699e11f25d023https://github.com/digitalbazaar/forge/security/advisories/GHSA-5m6q-g25r-mvwxhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33891.json