PT-2026-20349 · Unknown · Go-Ethereum

Fengjian · Published 2026-02-17 · Updated 2026-03-18 · CVE-2026-26315

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions go-ethereum (Geth) versions prior to 1.16.9 go-ethereum (Geth) version 1.17.0

Description A flaw exists in the ECIES cryptography implementation within go-ethereum (Geth) that could allow an attacker to extract bits of the p2p node key. The issue is related to the cryptographic process used for secure communication between nodes in the Ethereum network.

Recommendations Versions prior to 1.16.9 should be upgraded to version 1.16.9 or 1.17.0. After upgrading, rotate the node key by removing the file <datadir>/geth/nodekey before starting Geth.

Exploit

Fix

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2026-26315

GHSA-M6J8-RG6R-7MV8

GO-2026-4511

SUSE-SU-2026:0757-1

Affected Products

Go-Ethereum

References · 121

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26315.json · Exploit
• https://github.com/ethereum/go-ethereum/security/advisories/GHSA-m6j8-rg6r-7mv8 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-26315 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0757-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-26315 · Security Note
• https://osv.dev/vulnerability/GHSA-m6j8-rg6r-7mv8 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2026-4511 · Vendor Advisory
• https://github.com/ethereum/go-ethereum · Note
• https://github.com/ethereum/go-ethereum/commit/46bee92f9e64c0a06a12586a5d21cffc49d1ba8e · Note
• https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9 · Note
• https://github.com/ethereum/go-ethereum/pull/33669 · Note
• https://suse.com/security/cve/CVE-2026-0997 · Note
• https://suse.com/security/cve/CVE-2026-26205 · Note
• https://suse.com/security/cve/CVE-2026-24895 · Note
• https://suse.com/security/cve/CVE-2025-64175 · Note