{"id":"CVE-2023-26488","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-26488","generatedAt":"2026-10-22T22:06:41.029Z","title":"Subsequent transfers from the receiver of that token may overflow the balance as reported by `balanceOf`.","description":"OpenZeppelin Contracts is a library for secure smart contract development. The ERC721Consecutive contract designed for minting NFTs in batches does not update balances when a batch has size 1 and consists of a single token. Subsequent transfers from the receiver of that token may overflow the balance as reported by `balanceOf`. The issue exclusively presents with batches of size 1. The issue has been patched in 4.8.2.","published":"2023-03-03T22:15:10.000Z","lastModified":"2026-06-17T05:43:27.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-682"],"affected":["openzeppelin/contracts","openzeppelin/contracts upgradeable"],"epss":{"score":0.00713,"percentile":0.53049,"date":"2026-10-21","history":[]},"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 (0.71%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/commit/167bf67ed3907f4a674043496019fa346cee7705","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.2","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-878m-3g6q-594q","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/commit/167bf67ed3907f4a674043496019fa346cee7705","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.2","tags":["Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-878m-3g6q-594q","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26488","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."}