CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2020-26264
Medium (6.5) in ethereum go ethereum. EPSS 1.9% chance of exploitation in the next 30 days. Fixed in github.com/ethereum/go-ethereum 1.9.25.
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.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ethereum:go_ethereum
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-r33q-22hv-j29q | Go | github.com/ethereum/go-ethereum | <1.9.25 | 1.9.25 |
| GO-2021-0063 | Go | github.com/ethereum/go-ethereum | <1.9.25 | 1.9.25 |
References
- https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46
- https://github.com/ethereum/go-ethereum/pull/21896
- https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25
- https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q
- https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46