CVE-2026-33891

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/digitalbazaar/forge/commit/9bb8d67b99d17e4ebb5fd7596cd699e11f25d023	Patch
https://github.com/digitalbazaar/forge/security/advisories/GHSA-5m6q-g25r-mvwx	Exploit Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:13826
https://access.redhat.com/errata/RHSA-2026:24761
https://access.redhat.com/errata/RHSA-2026:24762
https://access.redhat.com/errata/RHSA-2026:34342
https://access.redhat.com/errata/RHSA-2026:9742
https://access.redhat.com/security/cve/CVE-2026-33891
https://bugzilla.redhat.com/show_bug.cgi?id=2452450
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33891.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:digitalbazaar:forge:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-03-27 21:17

Updated : 2026-09-04 13:19

NVD link : CVE-2026-33891

Mitre link : CVE-2026-33891

CVE.ORG link : CVE-2026-33891

JSON object : View

Products Affected

digitalbazaar

forge

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-606

Unchecked Input for Loop Condition

{"id": "CVE-2026-33891", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33891", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-30T15:38:00.562704Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "digitalbazaar", "product": "forge", "versions": [{"status": "affected", "version": "< 1.4.0"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:ansible_automation_platform:2.5::el8"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8", "versions": [{"status": "unaffected", "version": "0:2.5.20260422-3.el8ap", "lessThan": "*", "versionType": "rpm"}], "packageName": "automation-gateway", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ansible_automation_platform:2.5::el9"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 9", "versions": [{"status": "unaffected", "version": "0:2.5.20260422-3.el9ap", "lessThan": "*", "versionType": "rpm"}], "packageName": "automation-gateway", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ansible_automation_platform:2.6::el9"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9", "versions": [{"status": "unaffected", "version": "0:2.6.9-1.el9ap", "lessThan": "*", "versionType": "rpm"}], "packageName": "automation-platform-ui", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:cluster_observability_operator:1.5::el9"], "vendor": "Red Hat", "product": "Cluster Observability Operator 1.5.0", "versions": [{"status": "unaffected", "version": "1782839279", "lessThan": "*", "versionType": "rpm"}], "packageName": "cluster-observability-operator/logging-console-plugin-pf4-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhdh:1.8::el9"], "vendor": "Red Hat", "product": "Red Hat Developer Hub 1.8", "versions": [{"status": "unaffected", "version": "1776784286", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhdh/rhdh-hub-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhdh:1.9::el9"], "vendor": "Red Hat", "product": "Red Hat Developer Hub 1.9", "versions": [{"status": "unaffected", "version": "1777903262", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhdh/rhdh-hub-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:cryostat:4"], "vendor": "Red Hat", "product": "Cryostat 4", "packageName": "io.cryostat-cryostat", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/elasticsearch6-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/elasticsearch-operator-bundle", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/elasticsearch-proxy-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/elasticsearch-rhel9-operator", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/kibana6-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:logging:5"], "vendor": "Red Hat", "product": "Logging Subsystem for Red Hat OpenShift", "packageName": "openshift-logging/logging-curator5-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2", "packageName": "automation-eda-controller", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:apache_camel_hawtio:4"], "vendor": "Red Hat", "product": "Red Hat build of Apache Camel - HawtIO 4", "packageName": "io.hawt-project", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:service_registry:2"], "vendor": "Red Hat", "product": "Red Hat build of Apicurio Registry 2", "packageName": "io.apicurio-apicurio-registry", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:podman_desktop:1"], "vendor": "Red Hat", "product": "Red Hat Build of Podman Desktop", "packageName": "podman-desktop-macos-1-0", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:podman_desktop:1"], "vendor": "Red Hat", "product": "Red Hat Build of Podman Desktop", "packageName": "podman-desktop-windows-1-0", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_data_grid:8"], "vendor": "Red Hat", "product": "Red Hat Data Grid 8", "packageName": "org.infinispan-infinispan-console", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "grafana", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "pcs", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "grafana", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "pcs", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_fuse:7"], "vendor": "Red Hat", "product": "Red Hat Fuse 7", "packageName": "io.apicurio-apicurito", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_fuse:7"], "vendor": "Red Hat", "product": "Red Hat Fuse 7", "packageName": "io.syndesis-syndesis-parent", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_enterprise_bpms_platform:7"], "vendor": "Red Hat", "product": "Red Hat Process Automation 7", "packageName": "org.uberfire-uberfire-parent", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:quay:3"], "vendor": "Red Hat", "product": "Red Hat Quay 3", "packageName": "quay/quay-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-03-27T21:17:25.817", "references": [{"url": "https://github.com/digitalbazaar/forge/commit/9bb8d67b99d17e4ebb5fd7596cd699e11f25d023", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-5m6q-g25r-mvwx", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:13826", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24761", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24762", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:34342", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:9742", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-33891", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452450", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33891.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-835"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-606"}]}], "descriptions": [{"lang": "en", "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."}], "lastModified": "2026-09-04T13:19:07.970", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:digitalbazaar:forge:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "46CBC667-ED99-4B5B-89C8-428CF52FD3FB", "versionEndIncluding": "1.3.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}