What is CVE-2026-26315?

CVE-2026-26315 is a high-severity vulnerability in Ethereum Go-ethereum, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2026-02-19.

How severe is CVE-2026-26315?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Ethereum Go-ethereum

CVE-2026-26315

go-ethereum (Geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, through a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key. The issu…

EPSS: 0.004 (35.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Ethereum Go-ethereum — versions < 1.16.9
Ethereum Go_ethereum

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-26315?: CVE-2026-26315 is a high-severity vulnerability in Ethereum Go-ethereum, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2026-02-19.
How severe is CVE-2026-26315?: High severity. CVSS v3 base score is 7.5 out of 10.