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0xCERT Security Advisory 0xCERT-2026-0220
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Advisory-ID:  0xCERT-2026-0220
Severity:     High
Published:    2026-02-18T22:35:15.000Z
Updated:      2026-10-08T22:48:26.688Z
Chains:       Ethereum
URL:          https://www.0xcert.com/advisory/0xCERT-2026-0220

Title: Go Ethereum affected by DoS via malicious p2p message

Summary
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Go Ethereum affected by DoS via malicious p2p message. A vulnerable node can be forced to shutdown/crash using a specially crafted message. More details to be released later. The problem is resolved in the v1.16.9 and v1.

Details
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Summary
A vulnerable node can be forced to shutdown/crash using a specially crafted message. More details to be released later. The problem is resolved in the v1.16.9 and v1.

Affected
- - github.com/ethereum/go-ethereum (go) <= 1.16.8 — fixed in 1.16.9

Severity
High (CVSS 8.7), as rated by the upstream advisory.

Recommended actions
- - Upgrade github.com/ethereum/go-ethereum to 1.16.9 or later

Source & attribution
This 0xCERT advisory summarises GHSA-2gjw-fg97-vg3r / CVE-2026-26314 from the GitHub Advisory Database: https://github.com/advisories/GHSA-2gjw-fg97-vg3r. Details may change; refer to the original source for the authoritative record.

References
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- - https://github.com/advisories/GHSA-2gjw-fg97-vg3r
- - CVE-2026-26314
- - https://github.com/ethereum/go-ethereum/security/advisories/GHSA-2gjw-fg97-vg3r
- - https://github.com/ethereum/go-ethereum/commit/895a8597cb16c02203e38707ed2d1da5c500fe60
- - https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9
- - https://nvd.nist.gov/vuln/detail/CVE-2026-26314
- - https://pkg.go.dev/vuln/GO-2026-4507

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