CVE-2020-26256

{"containers": {"cna": {"affected": [{"product": "fast-csv", "vendor": "C2FO", "versions": [{"status": "affected", "version": "< 4.3.6"}]}], "descriptions": [{"lang": "en", "value": "Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denial of Service) when using ignoreEmpty option when parsing. This has been patched in `v4.3.6` You will only be affected by this if you use the `ignoreEmpty` parsing option. 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If you do use this option it is recommended that you upgrade to the latest version `v4.3.6` This vulnerability was found using a CodeQL query which identified `EMPTY_ROW_REGEXP` regular expression as vulnerable."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-400 Uncontrolled Resource Consumption"}]}]}, "references": {"reference_data": [{"name": "https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp", "refsource": "CONFIRM", "url": "https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp"}, {"name": "https://lgtm.com/query/8609731774537641779/", "refsource": "MISC", "url": "https://lgtm.com/query/8609731774537641779/"}, {"name": "https://github.com/C2FO/fast-csv/issues/540", "refsource": "MISC", "url": "https://github.com/C2FO/fast-csv/issues/540"}, {"name": "https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e", "refsource": "MISC", "url": "https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e"}, {"name": "https://www.npmjs.com/package/@fast-csv/parse", "refsource": "MISC", "url": "https://www.npmjs.com/package/@fast-csv/parse"}, {"name": "https://www.npmjs.com/package/fast-csv", "refsource": "MISC", "url": "https://www.npmjs.com/package/fast-csv"}]}, "source": {"advisory": "GHSA-8cv5-p934-3hwp", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:56:03.099Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lgtm.com/query/8609731774537641779/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/C2FO/fast-csv/issues/540"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.npmjs.com/package/%40fast-csv/parse"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.npmjs.com/package/fast-csv"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-26256", "datePublished": "2020-12-08T21:45:19.000Z", "dateReserved": "2020-10-01T00:00:00.000Z", "dateUpdated": "2024-08-04T15:56:03.099Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "fast-csv", "vendor": "C2FO", "versions": [{"status": "affected", "version": "< 4.3.6"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:c2fo:fast-csv:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "38FF4853-5265-411D-91CC-D0137CBE216E", "versionEndExcluding": "4.3.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denial of Service) when using ignoreEmpty option when parsing. This has been patched in `v4.3.6` You will only be affected by this if you use the `ignoreEmpty` parsing option. If you do use this option it is recommended that you upgrade to the latest version `v4.3.6` This vulnerability was found using a CodeQL query which identified `EMPTY_ROW_REGEXP` regular expression as vulnerable."}, {"lang": "es", "value": "Fast-csv es un paquete npm para analizar y formatear CSV o cualquier otro archivo de valor delimitado en node.&#xa0;En fast-cvs anterior a versi\u00f3n 4.3.6, se presenta una posible vulnerabilidad ReDoS (Denegaci\u00f3n de servicio de expresi\u00f3n regular) cuando se usa la opci\u00f3n ignoreEmpty al analizar.&#xa0;Esto ha sido parcheado en versi\u00f3n \"v4.3.6\" Solo se ver\u00e1 afectado por esto si utiliza la opci\u00f3n de an\u00e1lisis \"ignoreEmpty\".&#xa0;Si usa esta opci\u00f3n, se recomienda que actualice a la \u00faltima versi\u00f3n \"v4.3.6\". Esta vulnerabilidad se encontr\u00f3 usando una consulta CodeQL que identific\u00f3 la expresi\u00f3n regular \"EMPTY_ROW_REGEXP\" como vulnerable"}], "id": "CVE-2020-26256", "lastModified": "2026-06-17T03:07:56.073", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-12-08T22:15:17.540", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/issues/540"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://lgtm.com/query/8609731774537641779/"}, {"source": "security-advisories@github.com", "url": "https://www.npmjs.com/package/%40fast-csv/parse"}, {"source": "security-advisories@github.com", "tags": ["Product", "Third Party Advisory"], "url": "https://www.npmjs.com/package/fast-csv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/issues/540"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://lgtm.com/query/8609731774537641779/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.npmjs.com/package/%40fast-csv/parse"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Third Party Advisory"], "url": "https://www.npmjs.com/package/fast-csv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-400"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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