What is CVE-2026-26313?

CVE-2026-26313 is a high-severity vulnerability in Ethereum Go-ethereum, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-02-19.

How severe is CVE-2026-26313?

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

Resource exhaustion in Ethereum Go-ethereum

CVE-2026-26313

go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.17.0, an attacker can cause high memory usage by sending a specially-crafted p2p message. The issue is resolved in the v1.17.0 relea…

EPSS: 0.006 (43.2th 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:N/I:N/A:H.

Affected products

Ethereum Go-ethereum — versions < 1.17.0
Ethereum Go_ethereum

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

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

Frequently asked questions

What is CVE-2026-26313?: CVE-2026-26313 is a high-severity vulnerability in Ethereum Go-ethereum, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-02-19.
How severe is CVE-2026-26313?: High severity. CVSS v3 base score is 7.5 out of 10.