{"id":"CVE-2026-49206","revision":"86c5cf58887d41a291b4815bae16b2a8","records":[{"revision":"86c5cf58887d41a291b4815bae16b2a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-49206","aliases":[],"title":"rapidcsv: Integer overflow in iterator arithmetic causes out-of-bounds access","description":"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.","state":0,"publishedAt":"2026-10-14T15:44:43.286+00:00","modifiedAt":"2026-10-15T19:08:15.368+00:00","affected":[{"ecosystem":"Vendor product","name":"rapidcsv","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"d99kris\",\n                    \"product\": \"rapidcsv\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 8.99\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":2.9,"severity":"LOW"}],"references":["https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553","https://github.com/d99kris/rapidcsv/issues/220","https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1","https://github.com/d99kris/rapidcsv/releases/tag/v8.99"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-49206","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-49206","identifiers":["CVE-2026-49206"]},"retained":false,"historicalAffected":[]}],"coverage":[]}