CVE-2026-26313: Go Ethereum affected by DoS via malicious p2p message

February 18, 2026 (updated February 27, 2026)

An attacker can cause high memory usage by sending a specially-crafted p2p message. More details to be released later.

References

github.com/advisories/GHSA-689v-6xwf-5jf3
github.com/ethereum/go-ethereum
github.com/ethereum/go-ethereum/releases/tag/v1.17.0
github.com/ethereum/go-ethereum/security/advisories/GHSA-689v-6xwf-5jf3
nvd.nist.gov/vuln/detail/CVE-2026-26313
pkg.go.dev/vuln/GO-2026-4508

Code Behaviors & Features

Detect and mitigate CVE-2026-26313 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →