{"id":"CVE-2023-40591","aliases":["EUVD-2023-2566","GHSA-ppjg-v974-84cm","GO-2023-2046"],"status":"published","title":"Denial of service via malicious p2p message in go-ethereum","description":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01121,"percentile":0.66418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2023-09-06T18:07:20Z","modified":"2026-10-28T02:31:05Z","fixes":[{"ecosystem":"Go","package":"github.com/ethereum/go-ethereum","fixed_in":["1.12.1-stable","1.12.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/ethereum/go-ethereum","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.1-stable"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/ethereum/go-ethereum","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.12.1-stable"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/ethereum/go-ethereum","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.12.1"}]}]}],"products":[{"vendor":"ethereum","product":"go-ethereum"},{"vendor":"ethereum","product":"go_ethereum"}],"references":[{"url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-ppjg-v974-84cm","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://geth.ethereum.org/docs/developers/geth-developer/disclosures","tags":["x_refsource_MISC","x_transferred","Product","web"]},{"url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.12.1","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40591","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-ppjg-v974-84cm"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40591.json","tags":["advisory"]},{"url":"https://github.com/ethereum/go-ethereum","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-40591","title":"Denial of service via malicious p2p message in go-ethereum","description":"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","status":"published","published":"2023-09-06T18:07:20.899Z","modified":"2024-09-26T15:19:33.428Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:21.971258Z"}],"euvd":[{"id":"EUVD-2023-2566","description":"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","status":"published","published":"2023-09-06T18:07:20Z","modified":"2024-09-26T15:19:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:09.023721Z"}],"ghsa":[{"id":"GHSA-ppjg-v974-84cm","title":"Go-Ethereum vulnerable to denial of service via malicious p2p message","description":"### Impact\n\nA vulnerable node, can be made to consume unbounded amounts of memory when handling specially crafted p2p messages sent from an attacker node.\n\n### Details\n\nThe p2p handler spawned a new goroutine to respond to `ping` requests. By flooding a node with ping requests, an unbounded number of goroutines can be created, leading to resource exhaustion and potentially crash due to OOM.\n\n### Patches\n\nThe fix is included in geth version `1.12.1-stable`, i.e, `1.12.2-unstable` and onwards. \n\nFixed by https://github.com/ethereum/go-ethereum/pull/27887\n\n### Workarounds\n\nNo known workarounds. \n\n### Credits\n\nThis bug was reported by Patrick McHardy and reported via [bounty@ethereum.org](mailto:bounty@ethereum.org). \n\n### References\n\n","status":"published","published":"2023-09-06T19:49:46Z","modified":"2023-11-17T05:04:46Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:22.040291Z"}],"nvd":[{"id":"CVE-2023-40591","description":"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","status":"published","published":"2023-09-06T19:15:44.1Z","modified":"2026-06-17T06:18:36.99Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:08:28.268644Z"}],"osv":[{"id":"CVE-2023-40591","title":"Denial of service via malicious p2p message in go-ethereum","description":"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","status":"published","published":"2023-09-06T18:07:20.899Z","modified":"2026-10-28T02:31:05.644433284Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"GHSA-ppjg-v974-84cm","title":"Go-Ethereum vulnerable to denial of service via malicious p2p message","description":"### Impact\n\nA vulnerable node, can be made to consume unbounded amounts of memory when handling specially crafted p2p messages sent from an attacker node.\n\n### Details\n\nThe p2p handler spawned a new goroutine to respond to `ping` requests. By flooding a node with ping requests, an unbounded number of goroutines can be created, leading to resource exhaustion and potentially crash due to OOM.\n\n### Patches\n\nThe fix is included in geth version `1.12.1-stable`, i.e, `1.12.2-unstable` and onwards. \n\nFixed by https://github.com/ethereum/go-ethereum/pull/27887\n\n### Workarounds\n\nNo known workarounds. \n\n### Credits\n\nThis bug was reported by Patrick McHardy and reported via [bounty@ethereum.org](mailto:bounty@ethereum.org). \n\n### References\n\n","status":"published","published":"2023-09-06T19:49:46Z","modified":"2026-09-10T03:49:58.385793589Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:53.244788Z"},{"id":"GO-2023-2046","title":"Unbounded memory consumption in github.com/ethereum/go-ethereum","description":"Unbounded memory consumption in github.com/ethereum/go-ethereum","status":"published","published":"2023-10-25T18:06:33Z","modified":"2026-03-03T04:54:08.965124Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}