CVE-2026-49206
lowrapidcsv is a C++ CSV parser library.
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.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/d99kris/rapidcsv/commit/68f57cc6c83d5e0992904398822453489d8dfac1 security-advisories@github.com
- https://github.com/d99kris/rapidcsv/issues/220 security-advisories@github.com
- https://github.com/d99kris/rapidcsv/releases/tag/v8.99 security-advisories@github.com
- https://github.com/d99kris/rapidcsv/security/advisories/GHSA-v83v-8j5q-6553 security-advisories@github.com