CVE-2020-26938

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oauth2-server_project:oauth2-server:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "7FFE5BBB-4620-482D-A32F-D416AA7E4ADA", "versionEndIncluding": "3.1.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In oauth2-server (aka node-oauth2-server) through 3.1.1, the value of the redirect_uri parameter received during the authorization and token request is checked against an incorrect URI pattern (\"[a-zA-Z][a-zA-Z0-9+.-]+:\") before making a redirection. This allows a malicious client to pass an XSS payload through the redirect_uri parameter while making an authorization request. NOTE: this vulnerability is similar to CVE-2020-7741."}, {"lang": "es", "value": "En oauth2-server (tambi\u00e9n se conoce como node-oauth2-server) versiones hasta 3.1.1, el valor del par\u00e1metro redirect_uri recibido durante la petici\u00f3n de autorizaci\u00f3n y token es comprobado con un patr\u00f3n URI incorrecto (\"[a-zA-Z][a-zA-Z0-9+.-]+:\") antes de realizar un redireccionamiento. Esto permite a un cliente malicioso pasar una carga \u00fatil de tipo XSS mediante el par\u00e1metro redirect_uri mientras realiza una petici\u00f3n de autorizaci\u00f3n. NOTA: esta vulnerabilidad es similar a la CVE-2020-7741"}], "id": "CVE-2020-26938", "lastModified": "2026-06-17T03:08:34.977", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-29T21:15:08.863", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/grant-types/authorization-code-grant-type.js#L143"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/validator/is.js#L12"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/issues/637"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc3986#section-3"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc6749#section-3.1.2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/grant-types/authorization-code-grant-type.js#L143"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/validator/is.js#L12"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/oauthjs/node-oauth2-server/issues/637"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc3986#section-3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc6749#section-3.1.2"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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