{"id":"CVE-2020-26264","details":"Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.25 a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit. The vulnerability was patched in version 1.9.25.","aliases":["GHSA-r33q-22hv-j29q","GO-2021-0063"],"modified":"2026-04-10T04:25:23.792125Z","published":"2020-12-11T17:15:12.793Z","related":["GHSA-r33q-22hv-j29q"],"references":[{"type":"ADVISORY","url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25"},{"type":"ADVISORY","url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q"},{"type":"FIX","url":"https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46"},{"type":"FIX","url":"https://github.com/ethereum/go-ethereum/pull/21896"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ethereum/go-ethereum","events":[{"introduced":"0"},{"fixed":"e7872729012a4871397307b12cc3f4772ffcbec6"},{"fixed":"bddd103a9f0af27ef533f04e06ea429cf76b6d46"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.9.25"}]}}],"versions":["0.2.2","0.3.0","0.3.1","0.5.13","0.5.14","0.5.15","0.5.16","0.5.17","0.5.18","0.5.19","0.9.16","0.9.23","2","poc1","poc5-rc1","poc5-rc10","poc5-rc11","poc5-rc12","poc5-rc2","poc5-rc3","poc5-rc4","poc5-rc6","poc5-rc7","poc5-rc8","poc5-rc9","v0.8.4","v0.9.17","v0.9.18","v0.9.20","v0.9.21","v0.9.22","v0.9.23","v0.9.24","v0.9.25","v0.9.26","v0.9.28","v0.9.30","v0.9.32","v0.9.34","v0.9.34-1","v0.9.36","v0.9.38","v1.0.1","v1.5.0","v1.5.1","v1.5.2","v1.5.3","v1.5.4","v1.5.5","v1.5.6","v1.5.7","v1.5.8","v1.5.9","v1.6.0","v1.6.1","v1.6.2","v1.6.3","v1.6.4","v1.6.5","v1.6.6","v1.6.7","v1.7.0","v1.7.1","v1.7.2","v1.7.3","v1.8.0","v1.8.1","v1.8.10","v1.8.11","v1.8.12","v1.8.13","v1.8.14","v1.8.15","v1.8.16","v1.8.17","v1.8.18","v1.8.19","v1.8.2","v1.8.20","v1.8.21","v1.8.3","v1.8.4","v1.8.5","v1.8.6","v1.8.7","v1.8.8","v1.8.9","v1.9.0","v1.9.1","v1.9.10","v1.9.11","v1.9.12","v1.9.13","v1.9.14","v1.9.15","v1.9.16","v1.9.17","v1.9.18","v1.9.19","v1.9.2","v1.9.20","v1.9.21","v1.9.22","v1.9.23","v1.9.24","v1.9.3","v1.9.4","v1.9.5","v1.9.6","v1.9.7","v1.9.8","v1.9.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26264.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}