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0xCERT Security Advisory 0xCERT-2026-0216
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Advisory-ID:  0xCERT-2026-0216
Severity:     High
Published:    2026-01-13T21:55:29.000Z
Updated:      2026-10-08T22:48:25.539Z
Chains:       Ethereum
URL:          https://www.0xcert.com/advisory/0xCERT-2026-0216

Title: go-ethereum is vulnerable to high CPU usage leading to DoS via malicious p2p message

Summary
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go-ethereum is vulnerable to high CPU usage leading to DoS via malicious p2p message. Impact An attacker can cause high CPU usage by sending a specially crafted p2p message. More details to be released later.

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

Affected
- - github.com/ethereum/go-ethereum (go) <= 1.16.7 — fixed in 1.16.8

Severity
High (CVSS 7.1), as rated by the upstream advisory.

Recommended actions
- - Upgrade github.com/ethereum/go-ethereum to 1.16.8 or later

Source & attribution
This 0xCERT advisory summarises GHSA-mq3p-rrmp-79jg / CVE-2026-22868 from the GitHub Advisory Database, credited upstream to Yenya030: https://github.com/advisories/GHSA-mq3p-rrmp-79jg. Details may change; refer to the original source for the authoritative record.

References
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- - https://github.com/advisories/GHSA-mq3p-rrmp-79jg
- - CVE-2026-22868
- - https://github.com/ethereum/go-ethereum/security/advisories/GHSA-mq3p-rrmp-79jg
- - https://nvd.nist.gov/vuln/detail/CVE-2026-22868
- - https://github.com/ethereum/go-ethereum/commit/abeb78c647e354ed922726a1d719ac7bc64a07e2

Verify with the 0xCERT OpenPGP key: https://www.0xcert.com/pgp.asc
Fingerprint: 5F94 3ED1 1E50 CF31 2128  C493 CCC7 D9EC 9415 723D

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