{"id":"CVE-2026-85393","title":"node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification","summary":"node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures f…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-347","CWE-1284"],"published":"2026-09-03","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:43:32.537","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85393","references":[{"url":"https://github.com/advisories/GHSA-ppp5-5v6c-4jwp","label":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge","label":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.js","label":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.js","label":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/issues/1149","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-padding","label":"disclosure@vulncheck.com"},{"url":"https://github.com/advisories/GHSA-ppp5-5v6c-4jwp","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85393.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-85393"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528186"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85393"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85393"},{"url":"https://access.redhat.com/errata/RHSA-2026:71210"},{"url":"https://access.redhat.com/errata/RHSA-2026:71179"},{"url":"https://github.com/digitalbazaar/forge/pull/1152"},{"url":"https://github.com/advisories/GHSA-86w9-cpqp-85rv"},{"url":"https://access.redhat.com/errata/RHSA-2026:88200"}],"tags":["nvd","csaf","vex","red-hat","ghsa","npm"],"epss":0.00326,"epssPercentile":0.25549,"ingestedAt":"2026-09-24T20:51:40.241Z","vendor":"Red Hat","product":"Node HealthCheck Operator","affected":["node_healthcheck_operator","openshift_pipelines","ansible_automation_platform 2","build_of_podman_desktop","developer_hub","enterprise_linux_ai_rhel_ai 3","fuse 7","openshift_ai_rhoai","openshift_gitops","quay 3","self_service_automation_portal 2","ansible_automation_platform 2.5","ansible_automation_platform 2.6"],"patched":["ansible_automation_platform 2.5","ansible_automation_platform 2.6"],"aliases":["GHSA-86w9-cpqp-85rv"],"ecosystem":"npm","slug":"CVE-2026-85393","body":"## Overview\n\nnode-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys. This is an incomplete fix for CVE-2026-33894.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:71210** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.5 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71210)\n- **RHSA-2026:71179** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.6 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71179)\n- **Red Hat VEX** · Important · affected: Node HealthCheck Operator, OpenShift Pipelines, Red Hat Ansible Automation Platform 2, Red Hat Build of Podman Desktop, Red Hat Developer Hub, Red Hat Enterprise Linux AI (RHEL AI) 3, … · no fix planned: Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat Fuse 7, Red Hat OpenShift GitOps, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85393.json)\n- **RHSA-2026:88200** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.2 · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88200)\n\n## Package advisory (CVE-2026-85393)\n\nAffected packages:\n\n- `node-forge <= 1.4.0`\n\nSource: https://github.com/advisories/GHSA-86w9-cpqp-85rv","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}