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

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