CVE-2026-26958

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{"affected": [{"affectedData": [{"product": "filippo.io/edwards25519", "vendor": "FiloSottile", "versions": [{"status": "affected", "version": "< 1.1.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "filippo.io/edwards25519 is a Go library implementing the edwards25519 elliptic curve with APIs for building cryptographic primitives. In versions 1.1.0 and earlier, MultiScalarMult produces invalid results or undefined behavior if the receiver is not the identity point. If (*Point).MultiScalarMult is called on an initialized point that is not the identity point, it returns an incorrect result. If the method is called on an uninitialized point, the behavior is undefined. In particular, if the receiver is the zero value, MultiScalarMult returns an invalid point that compares Equal to every other point. Note that MultiScalarMult is a rarely used, advanced API. For example, users who depend on filippo.io/edwards25519 only through github.com/go-sql-driver/mysql are not affected. This issue has been fixed in version 1.1.1."}, {"lang": "es", "value": "filippo.io/edwards25519 es una biblioteca Go que implementa la curva el\u00edptica edwards25519 con API para construir primitivas criptogr\u00e1ficas. En las versiones 1.1.0 y anteriores, MultiScalarMult produce resultados no v\u00e1lidos o comportamiento indefinido si el receptor no es el punto identidad. Si se llama a (*Point).MultiScalarMult en un punto inicializado que no es el punto identidad, devuelve un resultado incorrecto. Si se llama al m\u00e9todo en un punto no inicializado, el comportamiento es indefinido. En particular, si el receptor es el valor cero, MultiScalarMult devuelve un punto no v\u00e1lido que se compara como Igual a cualquier otro punto. Tenga en cuenta que MultiScalarMult es una API avanzada y poco utilizada. Por ejemplo, los usuarios que dependen de filippo.io/edwards25519 solo a trav\u00e9s de github.com/go-sql-driver/mysql no se ven afectados. Este problema ha sido corregido en la versi\u00f3n 1.1.1."}], "id": "CVE-2026-26958", "lastModified": "2026-06-17T10:26:26.987", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.7, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "UNREPORTED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26958", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-20T15:27:08.887006Z", "version": "2.0.3"}}]}, "published": "2026-02-19T23:16:26.577", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/FiloSottile/edwards25519/commit/d1c650afb95fad0742b98d95f2eb2cf031393abb"}, {"source": "security-advisories@github.com", "url": "https://github.com/FiloSottile/edwards25519/releases/tag/v1.1.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/FiloSottile/edwards25519/security/advisories/GHSA-fw7p-63qq-7hpr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-665"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "filippo.io/edwards25519: filippo.io/edwards25519: Cryptographic integrity bypass due to incorrect MultiScalarMult results", "id": "2441221", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441221"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in filippo.io/edwards25519, a Go library used for cryptographic operations. This vulnerability occurs in the MultiScalarMult function when it processes points that are not properly initialized or are not the identity point. Such conditions can lead to incorrect cryptographic results, potentially allowing an attacker to bypass security checks or compromise data integrity. This issue impacts the reliability of cryptographic primitives within applications utilizing the library."], "name": "CVE-2026-26958", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:openshift_custom_metrics_autoscaler:2", "fix_state": "Fix deferred", "package_name": "custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9", "product_name": "Custom Metric Autoscaler operator for Red Hat Openshift"}, {"cpe": "cpe:/a:redhat:openshift_custom_metrics_autoscaler:2", "fix_state": "Fix deferred", "package_name": "custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9", "product_name": "Custom Metric Autoscaler operator for Red Hat Openshift"}, {"cpe": "cpe:/a:redhat:openshift_custom_metrics_autoscaler:2", "fix_state": "Fix deferred", "package_name": "custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9", 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"cpe:/a:redhat:openshift_security_profiles_operator:1", "fix_state": "Fix deferred", "package_name": "compliance/openshift-security-profiles-operator-bundle", "product_name": "Security Profiles Operator"}, {"cpe": "cpe:/a:redhat:openshift_security_profiles_operator:1", "fix_state": "Fix deferred", "package_name": "compliance/openshift-security-profiles-rhel8-operator", "product_name": "Security Profiles Operator"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Fix deferred", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Fix deferred", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-oidc-discovery-provider-rhel9", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Fix deferred", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-server-rhel9", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Out of support scope", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Out of support scope", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-oidc-discovery-provider-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Out of support scope", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-server-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Out of support scope", "package_name": "zero-trust-workload-identity-manager/zero-trust-workload-identity-manager-operator-bundle", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Out of support scope", "package_name": "zero-trust-workload-identity-manager/zero-trust-workload-identity-manager-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}], "public_date": "2026-02-19T23:01:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-26958\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-26958\nhttps://github.com/FiloSottile/edwards25519/commit/d1c650afb95fad0742b98d95f2eb2cf031393abb\nhttps://github.com/FiloSottile/edwards25519/releases/tag/v1.1.1\nhttps://github.com/FiloSottile/edwards25519/security/advisories/GHSA-fw7p-63qq-7hpr"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.1.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "filippo.io/edwards25519", "source": "cna", "vendor": "FiloSottile"}, "product": "filippo.io/edwards25519", "vendor": "filosottile"}], "analysis": {"en": {"generated_at": "2026-04-17T17:46:43.703375+00:00", "value": {"mitigation_remediation": ["Upgrade to v1.1.1 or later, which contains the fix for the MultiScalarMult issue.", "Refactor any code that uses MultiScalarMult to ensure the receiver is the identity point or avoid the method if the library version is older.", "Perform a code review or static analysis of cryptographic modules to confirm that no undefined behavior can occur when using the elliptic curve library."], "summary": {"action": "Update Library", "impact": "Incorrect cryptographic output leading to potential protocol failures"}, "threat_synthesis": {"affected_systems": "The vendor FiloSottile provides the library filippo.io/edwards25519. Versions 1.1.0 and earlier are affected. The bug does not affect code that depends on the library indirectly through other packages that never call MultiScalarMult, such as applications that use go-sql-driver/mysql.", "description_and_impact": "The MultiScalarMult function in the Go library outputs an incorrect point when the receiver is not the identity point. The erroneous result may propagate through cryptographic protocols, causing authentication failures or invalid signatures. This flaw resides in the mathematical core of the library and can invalidate any primitive built upon it. The impact is limited to applications that invoke this rarely used, advanced API.", "risk_and_exploitability": "The CVSS score of 1.7 and EPSS of less than 1% indicate a very low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is local code execution via applications that directly invoke MultiScalarMult on a non\u2011identity receiver. No remote exploitation path is known. Given the low severity and limited exposure, the risk to most users is minimal, but patching remains recommended."}}}}, "created": "2026-02-20T09:53:33.026331+00:00", "updated": "2026-04-17T18:00:12.147769+00:00", "vendors": ["filosottile", "filosottile$PRODUCT$filippo.io/edwards25519"]}