{"id":"CVE-2026-49206","title":"rapidcsv is a C++ CSV parser library","summary":"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 dim…","severity":"low","cvss":2.9,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-190","CWE-787"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:17:45.667","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49206","references":[{"url":"https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1","label":"security-advisories@github.com"},{"url":"https://github.com/d99kris/rapidcsv/issues/220","label":"security-advisories@github.com"},{"url":"https://github.com/d99kris/rapidcsv/releases/tag/v8.99","label":"security-advisories@github.com"},{"url":"https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553","label":"security-advisories@github.com"}],"tags":["nvd"],"ingestedAt":"2026-10-14T16:40:32.125Z","slug":"CVE-2026-49206","body":"## Overview\n\nrapidcsv 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":16,"depthScoreParts":{"impact":16,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}