CVE-2021-27279

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode)."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-02-22T19:04:20.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://mybb.com/versions/1.8.25/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-27279", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode)."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://mybb.com/versions/1.8.25/", "refsource": "MISC", "url": "https://mybb.com/versions/1.8.25/"}, {"name": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w", "refsource": "CONFIRM", "url": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w"}, {"name": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a", "refsource": "CONFIRM", "url": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:48:16.072Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://mybb.com/versions/1.8.25/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-27279", "datePublished": "2021-02-22T19:04:20.000Z", "dateReserved": "2021-02-16T00:00:00.000Z", "dateUpdated": "2024-08-03T20:48:16.072Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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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:mybb:mybb:*:*:*:*:*:*:*:*", "matchCriteriaId": "F8B31EA3-CFEA-43B3-8348-397BED3FD568", "versionEndExcluding": "1.8.25", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode)."}, {"lang": "es", "value": "MyBB versiones anteriores a 1.8.25, permite un ataque de tipo XSS almacenado por medio de etiquetas [correo electr\u00f3nico] anidadas con MyCode (tambi\u00e9n se conoce como BBCode)"}], "id": "CVE-2021-27279", "lastModified": "2026-06-17T03:44:36.427", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-22T20:15:13.243", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://mybb.com/versions/1.8.25/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75w"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://mybb.com/versions/1.8.25/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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