{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-49206", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-28T03:42:34.340Z", "datePublished": "2026-10-14T15:44:43.286Z", "dateUpdated": "2026-10-14T15:44:43.286Z"}, "containers": {"cna": {"title": "rapidcsv: Integer overflow in iterator arithmetic causes out-of-bounds access", "problemTypes": [{"descriptions": [{"cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 2.9, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553"}, {"name": "https://github.com/d99kris/rapidcsv/issues/220", "tags": ["x_refsource_MISC"], "url": "https://github.com/d99kris/rapidcsv/issues/220"}, {"name": "https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1", "tags": ["x_refsource_MISC"], "url": "https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1"}, {"name": "https://github.com/d99kris/rapidcsv/releases/tag/v8.99", "tags": ["x_refsource_MISC"], "url": "https://github.com/d99kris/rapidcsv/releases/tag/v8.99"}], "affected": [{"vendor": "d99kris", "product": "rapidcsv", "versions": [{"version": "< 8.99", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-14T15:44:43.286Z"}, "descriptions": [{"lang": "en", "value": "rapidcsv is a C++ CSV parser library. Prior to 8.99, RemoveColumn, InsertColumn, RemoveRow, InsertRow, and GetColumnNames converted size_t indexes to int before adding them to std::vector iterators. On 64-bit systems, in a CSV matrix dimension containing more than 2^31 elements, an index above INT_MAX could wrap to a negative iterator offset and point before the start of the vector, causing undefined behavior, heap memory corruption, or a crash. Triggering the issue requires an extremely large in-memory document, requiring tens of gigabytes of memory at minimum, so typical CSV documents are not practically affected. This issue is fixed in version 8.99."}], "source": {"advisory": "GHSA-v83v-8j5q-6553", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "rapidcsv", "vendor": "d99kris", "versions": [{"status": "affected", "version": "< 8.99"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "rapidcsv is a C++ CSV parser library. Prior to 8.99, RemoveColumn, InsertColumn, RemoveRow, InsertRow, and GetColumnNames converted size_t indexes to int before adding them to std::vector iterators. On 64-bit systems, in a CSV matrix dimension containing more than 2^31 elements, an index above INT_MAX could wrap to a negative iterator offset and point before the start of the vector, causing undefined behavior, heap memory corruption, or a crash. Triggering the issue requires an extremely large in-memory document, requiring tens of gigabytes of memory at minimum, so typical CSV documents are not practically affected. This issue is fixed in version 8.99."}], "id": "CVE-2026-49206", "lastModified": "2026-10-14T16:17:45.667", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 2.9, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-14T16:17:45.667", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1"}, {"source": "security-advisories@github.com", "url": "https://github.com/d99kris/rapidcsv/issues/220"}, {"source": "security-advisories@github.com", "url": "https://github.com/d99kris/rapidcsv/releases/tag/v8.99"}, {"source": "security-advisories@github.com", "url": "https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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