CVE-2026-33895

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The library's Ed25519 signature verification process does not correctly validate cryptographic signatures, allowing forged non-canonical signatures to be accepted. A remote attacker could exploit this signature malleability to bypass authentication and authorization logic. 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Antes de la versi\u00f3n 1.4.0, la verificaci\u00f3n de firmas Ed25519 acepta firmas no can\u00f3nicas forjadas donde el escalar S no se reduce m\u00f3dulo el orden del grupo (\u2019S >= L\u2019). Una firma v\u00e1lida y su variante \u2019S + L\u2019 ambas verifican en forge, mientras que \u2019crypto.verify\u2019 de Node.js (respaldado por OpenSSL) rechaza la variante \u2019S + L\u2019, seg\u00fan lo definido por la especificaci\u00f3n. Esta clase de maleabilidad de firmas ha sido explotada en la pr\u00e1ctica para eludir la l\u00f3gica de autenticaci\u00f3n y autorizaci\u00f3n (ver CVE-2026-25793, CVE-2022-35961). Las aplicaciones que dependen de la unicidad de la firma (es decir, deduplicaci\u00f3n por bytes de firma, seguimiento de repeticiones, comprobaciones de canonicidad de objetos firmados) pueden ser eludidas. La versi\u00f3n 1.4.0 corrige el problema."}], "id": "CVE-2026-33895", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33895", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-31T18:39:49.350161Z", "version": "2.0.3"}}]}, "published": "2026-03-27T21:17:26.157", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://datatracker.ietf.org/doc/html/rfc8032#section-8.4"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/digitalbazaar/forge/commit/bdecf11571c9f1a487cc0fe72fe78ff6dfa96b85"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-q67f-28xg-22rw"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "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-2026:34342"}, {"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-2026-33895"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452457"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Vendor Advisory"], "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-q67f-28xg-22rw"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33895.json"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-347"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "node-forge: Forge: Authentication bypass via forged Ed25519 cryptographic signatures", "id": "2452457", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452457"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-347", "details": ["A flaw was found in Forge (also called `node-forge`), a JavaScript library used for Transport Layer Security (TLS). The library's Ed25519 signature verification process does not correctly validate cryptographic signatures, allowing forged non-canonical signatures to be accepted. A remote attacker could exploit this signature malleability to bypass authentication and authorization logic. This vulnerability can also circumvent security checks in applications that rely on the uniqueness of cryptographic signatures for functions such as deduplication or preventing replay attacks."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-33895", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Affected", "package_name": "io.cryostat-cryostat", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/elasticsearch6-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/elasticsearch-operator-bundle", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/elasticsearch-proxy-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/elasticsearch-rhel9-operator", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/kibana6-rhel8", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/logging-curator5-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Affected", "package_name": "automation-eda-controller", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Affected", "package_name": "automation-gateway", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Affected", "package_name": "automation-platform-ui", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:apache_camel_hawtio:4", "fix_state": "Affected", "package_name": "io.hawt-project", "product_name": "Red Hat build of Apache Camel - HawtIO 4"}, {"cpe": "cpe:/a:redhat:service_registry:2", "fix_state": "Affected", "package_name": "io.apicurio-apicurio-registry", "product_name": "Red Hat build of Apicurio Registry 2"}, {"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Affected", "package_name": "podman-desktop-macos-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Affected", "package_name": "podman-desktop-windows-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Affected", "package_name": "org.infinispan-infinispan-console", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Affected", "package_name": "io.apicurio-apicurito", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Affected", "package_name": "io.syndesis-syndesis-parent", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Affected", "package_name": "org.uberfire-uberfire-parent", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}], "public_date": "2026-03-27T20:47:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-33895\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-33895\nhttps://datatracker.ietf.org/doc/html/rfc8032#section-8.4\nhttps://github.com/digitalbazaar/forge/commit/bdecf11571c9f1a487cc0fe72fe78ff6dfa96b85\nhttps://github.com/digitalbazaar/forge/security/advisories/GHSA-q67f-28xg-22rw"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "forge", "source": "cna", "vendor": "digitalbazaar"}, "product": "forge", "vendor": "digitalbazaar"}], "analysis": {"en": {"generated_at": "2026-04-14T02:24:22.774242+00:00", "value": {"mitigation_remediation": ["Upgrade node\u2011forge to version 1.4.0 or later", "Verify all Ed25519 verifications use the updated library or Node.js crypto.verify which rejects non\u2011canonical signatures", "Audit application logic that relies on signature uniqueness or replay protection to ensure it does not depend on forgery\u2011prone checks"], "summary": {"action": "Immediate Patch", "impact": "Signature forgery allows authentication bypass"}, "threat_synthesis": {"affected_systems": "Digitalbazaar\u2019s node\u2011forge library is affected in all releases prior to version 1.4.0. Any Node.js application that imports forge for Ed25519 signature verification and relies on nonce or uniqueness checks is potentially vulnerable unless it has been updated to 1.4.0 or newer.", "description_and_impact": "Forge\u2019s Ed25519 verification accepts non\u2011canonical signatures where the scalar component S is not reduced modulo the group order. This missing check lets an attacker craft a signature that differs by the group order L, which still verifies correctly in forge but is invalid per the Ed25519 specification. The result is that applications trusting forge\u2019s verification can accept forged signatures, enabling attackers to bypass authentication, authorization, and any signature\u2011based integrity checks such as deduplication or replay prevention. The weakness is a signature forgery vulnerability under CWE\u2011347.", "risk_and_exploitability": "The CVSS score of 7.5 indicates a high impact with full privileges required by the signer. The EPSS score of less than 1\u202f% suggests low exploitation probability, and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires an attacker to supply a crafted signature that satisfies forge\u2019s lenient verifier, most likely through a remote interface that processes signed data. Once the forged signature is accepted, the attacker can impersonate trusted users, elevate privileges, or tamper with data without detection."}}}}, "created": "2026-03-29T20:29:58.008150+00:00", "updated": "2026-04-14T16:42:37.897225+00:00", "vendors": ["digitalbazaar", "digitalbazaar$PRODUCT$forge"]}