In short
- CVE-2026-26315 is a HIGH (CVSS 7.5) vulnerability affecting github.com/ethereum/go-ethereum, go ethereum (ethereum).
- Chance of exploitation in the next 30 days (EPSS): 0.51%, higher than 43.3% of all vulnerabilities.
- Fix: update to 1.16.9 or later.
Description
Impact
Through a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key.
Patches
The issue is resolved in the v1.16.9 and v1.17.0 releases of Geth. We recommend rotating the node key after applying the upgrade, which can be done by removing the file <datadir>/geth/nodekey before starting Geth.
Credit
The issue was reported as a public pull request to go-ethereum by @fengjian.
NVD description
go-ethereum (Geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, through a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key. The issue is resolved in the v1.16.9 and v1.17.0 releases of Geth. Geth maintainers recommend rotating the node key after applying the upgrade, which can be done by removing the file `<datadir>/geth/nodekey` before starting Geth.
More vulnerabilities in github.com/ethereum/go-ethereum
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