{"id":"CVE-2023-40591","aliases":["GHSA-ppjg-v974-84cm","GO-2023-2046"],"url":"https://o3.security/vulnerability/CVE-2023-40591","summary":"Denial of service via malicious p2p message in go-ethereum","details":"go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. A vulnerable node, can be made to consume unbounded amounts of memory when handling specially crafted p2p messages sent from an attacker node. The fix is included in geth version `1.12.1-stable`, i.e, `1.12.2-unstable` and onwards. Users are advised to upgrade. There are no known workarounds for this vulnerability.\n","published":"2023-09-06T18:07:20.899Z","modified":"2026-08-12T03:51:20.219736186Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.01121,"percentile":0.64597,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/ethereum/go-ethereum","fixedVersion":"1.12.1-stable"}],"fix":null,"references":[{"type":"WEB","url":"https://geth.ethereum.org/docs/developers/geth-developer/disclosures"},{"type":"WEB","url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.12.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40591.json"},{"type":"ADVISORY","url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-ppjg-v974-84cm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40591"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.219736186Z"}}