high7.5
CVE-2026-26315
Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake
Impact
### 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/ethereum/go-ethereum | <= 1.16.8 | 1.16.9 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ethereum | Go Ethereum | before 1.16.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/ethereum/go-ethereum/security/advisories/GHSA-m6j8-rg6r-7mv8
- https://github.com/advisories/GHSA-m6j8-rg6r-7mv8
- https://github.com/ethereum/go-ethereum/pull/33669
- https://github.com/ethereum/go-ethereum/commit/46bee92f9e64c0a06a12586a5d21cffc49d1ba8e
- https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9
- https://nvd.nist.gov/vuln/detail/CVE-2026-26315
- https://pkg.go.dev/vuln/GO-2026-4511