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  5. CVE-2026-26315

CVE-2026-26315: Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake

February 18, 2026 (updated February 27, 2026)

Through a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key.

References

  • github.com/advisories/GHSA-m6j8-rg6r-7mv8
  • github.com/ethereum/go-ethereum
  • github.com/ethereum/go-ethereum/commit/46bee92f9e64c0a06a12586a5d21cffc49d1ba8e
  • github.com/ethereum/go-ethereum/pull/33669
  • github.com/ethereum/go-ethereum/releases/tag/v1.16.9
  • github.com/ethereum/go-ethereum/security/advisories/GHSA-m6j8-rg6r-7mv8
  • nvd.nist.gov/vuln/detail/CVE-2026-26315
  • pkg.go.dev/vuln/GO-2026-4511

Code Behaviors & Features

Detect and mitigate CVE-2026-26315 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 1.16.9

Fixed versions

  • 1.16.9

Solution

Upgrade to version 1.16.9 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-203: Observable Discrepancy

Source file

go/github.com/ethereum/go-ethereum/CVE-2026-26315.yml

Spotted a mistake? Edit the file on GitLab.

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