CVE-2021-41163

{"containers": {"cna": {"affected": [{"product": "discourse", "vendor": "discourse", "versions": [{"status": "affected", "version": "tests-passed < 2.8.0.beta7"}, {"status": "affected", "version": "beta < 2.8.0.beta7"}, {"status": "affected", "version": "stable < 2.7.9"}]}], "descriptions": [{"lang": "en", "value": "Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-74", "description": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-10-20T22:30:14.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9"}], "source": {"advisory": "GHSA-jcjx-pvpc-qgwq", "discovery": "UNKNOWN"}, "title": "RCE via malicious SNS subscription payload", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-41163", "STATE": "PUBLIC", "TITLE": "RCE via malicious SNS subscription payload"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "discourse", "version": {"version_data": [{"version_value": "tests-passed < 2.8.0.beta7"}, {"version_value": "beta < 2.8.0.beta7"}, {"version_value": "stable < 2.7.9"}]}}]}, "vendor_name": "discourse"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"}]}]}, "references": {"reference_data": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq", "refsource": "CONFIRM", "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq"}, {"name": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9", "refsource": "MISC", "url": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9"}]}, "source": {"advisory": "GHSA-jcjx-pvpc-qgwq", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T02:59:31.566Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-41163", "datePublished": "2021-10-20T22:30:14.000Z", "dateReserved": "2021-09-15T00:00:00.000Z", "dateUpdated": "2024-08-04T02:59:31.566Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "discourse", "vendor": "discourse", "versions": [{"status": "affected", "version": "tests-passed < 2.8.0.beta7"}, {"status": "affected", "version": "beta < 2.8.0.beta7"}, {"status": "affected", "version": "stable < 2.7.9"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "matchCriteriaId": "95493165-6C19-4E89-AC2B-72268D6ECB2C", "versionEndExcluding": "2.7.9", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:*", "matchCriteriaId": "9E7F8AC4-35D1-45E5-8A3A-B0205000A5D3", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:*", "matchCriteriaId": "B9AE12FE-0396-4843-8D30-D8C44FAE01DA", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:*", "matchCriteriaId": "F101AEAB-4FB7-4BE3-931B-595702D616C7", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:*", "matchCriteriaId": "F6878B7F-2691-4D3F-8116-CB282FDAAAC7", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta5:*:*:*:*:*:*", "matchCriteriaId": "76EABAB9-BEA4-48D4-ADBA-D00746B29C52", "vulnerable": true}, {"criteria": "cpe:2.3:a:discourse:discourse:2.8.0:beta6:*:*:*:*:*:*", "matchCriteriaId": "82A255A2-4658-41AD-A4DE-A7F8D018028D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy."}, {"lang": "es", "value": "Discourse es una plataforma de c\u00f3digo abierto para el debate comunitario. En las versiones afectadas, las peticiones dise\u00f1adas de forma maliciosa pod\u00edan conllevar a una ejecuci\u00f3n de c\u00f3digo remota . Esto se deb\u00eda a una falta de comprobaci\u00f3n en los valores de subscribe_url. Este problema est\u00e1 parcheado en las \u00faltimas versiones estables, beta y de prueba de Discourse. Para solucionar el problema sin necesidad de actualizar, las peticiones con una ruta que empiece por /webhooks/aws podr\u00edan bloquearse en un proxy de subida"}], "id": "CVE-2021-41163", "lastModified": "2026-06-17T04:08:00.170", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-10-20T23:15:07.477", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-74"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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