{"id":"CVE-2026-33891","title":"Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript","summary":"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 BigInt…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-835","CWE-606"],"vendor":"digitalbazaar","product":"forge","affected":["forge <= 1.3.3"],"published":"2026-03-27","updated":"2026-07-02","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-33891","references":[{"url":"https://github.com/digitalbazaar/forge/commit/9bb8d67b99d17e4ebb5fd7596cd699e11f25d023","label":"security-advisories@github.com"},{"url":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-5m6q-g25r-mvwx","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13826","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:24761","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:24762","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:34342","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:9742","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-33891","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2452450","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33891.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-33891"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33891"},{"url":"https://access.redhat.com/errata/RHSA-2026:86618"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.00607,"epssPercentile":0.48804,"ingestedAt":"2026-07-02T12:34:40.393Z","patched":["ansible_automation_platform_2_5_for_rhel 8","ansible_automation_platform_2_5_for_rhel 9","ansible_automation_platform_2_6_for_rhel 9","cluster_observability_operator 1.5.3","developer_hub 1.8","developer_hub 1.9"],"slug":"CVE-2026-33891","body":"## Overview\n\nForge (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.\n\n## Affected\n\n- `forge <= 1.3.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:24761** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9 · released 2026-06-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:24761)\n- **RHSA-2026:24762** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.6 for RHEL 9 · released 2026-06-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:24762)\n- **RHSA-2026:34342** · Red Hat · fixed in: Cluster Observability Operator 1.5.3 · released 2026-07-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:34342)\n- **RHSA-2026:9742** · Red Hat · fixed in: Red Hat Developer Hub 1.8 · released 2026-04-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:9742)\n- **RHSA-2026:13826** · Red Hat · fixed in: Red Hat Developer Hub 1.9 · released 2026-05-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:13826)\n- **Red Hat VEX** · Important · affected: Logging Subsystem for Red Hat OpenShift, Red Hat build of Apicurio Registry 2, Red Hat Build of Podman Desktop, Red Hat Enterprise Linux 10, Red Hat Fuse 7 · no fix planned: Logging Subsystem for Red Hat OpenShift, Red Hat Fuse 7, Red Hat build of Apicurio Registry 2, Red Hat Build of Podman Desktop, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33891.json)\n- **RHSA-2026:86618** · Red Hat · fixed in: Red Hat Ceph Storage 9.2 · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:86618)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}