{"id":"CVE-2026-49206","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-49206","generatedAt":"2026-10-28T02:57:54.871Z","title":"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.","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.","published":"2026-10-14T16:17:46.000Z","lastModified":"2026-10-16T20:04:30.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":2.9,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-190","CWE-787"],"affected":[],"epss":{"score":0.00157,"percentile":0.04758,"date":"2026-10-26","history":[{"date":"2026-10-15","score":0.00157,"percentile":0.04348}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-14T16:17:46.000Z","detail":{"score":"2.9","severity":"LOW","publishedAt":"2026-10-14T16:17:45.667Z"},"summary":"New CVE, low severity (CVSS 2.9)."}],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49206","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}