CVE-2018-20745

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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:yiiframework:yii:*:*:*:*:*:*:*:*", "matchCriteriaId": "E86F5F96-5AF7-484F-BCD3-3EE7F73C4CB4", "versionEndIncluding": "2.0.15.1", "versionStartIncluding": "2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Yii 2.x through 2.0.15.1 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems."}, {"lang": "es", "value": "Yii, en versiones 2.x anteriores a la 2.0.15.1, convierte una pol\u00edtica comod\u00edn de CORS para que refleje un valor arbitrario de la cabecera Origin, que no es compatible con el dise\u00f1o de seguridad de CORS y podr\u00eda conducir a problemas de mala configuraci\u00f3n de seguridad de CORS."}], "id": "CVE-2018-20745", "lastModified": "2026-06-17T01:53:23.537", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-01-28T08:29:00.527", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/yiisoft/yii2/issues/16193"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-chen.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/yiisoft/yii2/issues/16193"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-chen.pdf"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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