CVE-2020-26290

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The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references)."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "CWE-347: Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-28T19:15:17.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"}, {"tags": ["x_refsource_MISC"], "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"}], "source": {"advisory": "GHSA-m9hp-7r99-94h5", "discovery": "UNKNOWN"}, "title": "Critical security issues in XML encoding in Dex", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-26290", "STATE": "PUBLIC", "TITLE": "Critical security issues in XML encoding in Dex"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "dex", "version": {"version_data": [{"version_value": "< 2.27.0"}]}}]}, "vendor_name": "dexidp"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references)."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-347: Improper Verification of Cryptographic Signature"}]}]}, "references": {"reference_data": [{"name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md", "refsource": "MISC", "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"}, {"name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md", "refsource": "MISC", "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"}, {"name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md", "refsource": "MISC", "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"}, {"name": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/", "refsource": "MISC", "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"}, {"name": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5", "refsource": "CONFIRM", "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"}, {"name": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7", "refsource": "MISC", "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"}, {"name": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8", "refsource": "MISC", "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"}, {"name": "https://github.com/dexidp/dex/releases/tag/v2.27.0", "refsource": "MISC", "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"}]}, "source": {"advisory": "GHSA-m9hp-7r99-94h5", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:56:04.350Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-26290", "datePublished": "2020-12-28T19:15:17.000Z", "dateReserved": "2020-10-01T00:00:00.000Z", "dateUpdated": "2024-08-04T15:56:04.350Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "dex", "vendor": "dexidp", "versions": [{"status": "affected", "version": "< 2.27.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*", "matchCriteriaId": "6DED3272-1D65-4A06-97D5-73FC7EE37516", "versionEndExcluding": "2.27.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references)."}, {"lang": "es", "value": "Dex es un proveedor federado de OpenID Connect escrito en Go.&#xa0;En Dex versi\u00f3n anterior a 2.27.0, presenta un conjunto cr\u00edtico de vulnerabilidades que impacta a usuarios que aprovechan el conector SAML.&#xa0;Las vulnerabilidades permiten una posible omisi\u00f3n de firmas debido a problemas con la codificaci\u00f3n XML en la biblioteca Go subyacente.&#xa0;Las vulnerabilidades han sido abordadas en la versi\u00f3n 2.27.0, mediante el uso de xml-roundtrip-validator de Mattermost (consulte las referencias relacionadas)"}], "id": "CVE-2020-26290", "lastModified": "2026-06-17T03:08:00.583", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", 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