Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake
Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake. 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.
Vuln-watch · relayed from the GitHub Advisory Database; see Source & attribution below
Summary
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.
Affected
- github.com/ethereum/go-ethereum (go) <= 1.16.8 — fixed in 1.16.9
Severity
Medium (CVSS 6.9), as rated by the upstream advisory.
Recommended actions
- Upgrade github.com/ethereum/go-ethereum to 1.16.9 or later
Source & attribution
This 0xCERT advisory summarises GHSA-m6j8-rg6r-7mv8 / CVE-2026-26315 from the GitHub Advisory Database, credited upstream to fengjian: https://github.com/advisories/GHSA-m6j8-rg6r-7mv8. Details may change; refer to the original source for the authoritative record.
References
- https://github.com/advisories/GHSA-m6j8-rg6r-7mv8
- CVE-2026-26315
- https://github.com/ethereum/go-ethereum/security/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
OpenPGP-signed. The signed text of this advisory verifies against the 0xCERT key CCC7 D9EC 9415 723D.
Published 2026-02-18 · last updated 2026-10-08
curl -s https://www.0xcert.com/pgp.asc | gpg --import && curl -s https://www.0xcert.com/advisory/0xCERT-2026-0221/signed.txt | gpg --verify