Insufficient verification of data authenticity in go-ethereum - CVE-2026-26315
Published: April 27, 2026
Vulnerability identifier: #VU127997
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-26315
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ethereum
Affected software:
go-ethereum
go-ethereum
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper public key validation in the ECIES cryptography implementation in the RLPx handshake when processing handshake data. A remote attacker can send a specially crafted handshake to disclose sensitive information.
The issue may allow extraction of bits of the p2p node key.
How to mitigate CVE-2026-26315
Install security update from vendor's website.