{"id":"CVE-2026-26315","aliases":["GHSA-m6j8-rg6r-7mv8","GO-2026-4511"],"url":"https://o3.security/vulnerability/CVE-2026-26315","summary":"Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake","details":"### Impact\n\nThrough a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key.\n\n### Patches\n\nThe issue is resolved in the v1.16.9 and v1.17.0 releases of Geth. We recommend rotating the node key after applying the upgrade, which can be done by removing the file `<datadir>/geth/nodekey` before starting Geth.\n\n### Credit\n\nThe issue was reported as a public pull request to go-ethereum by @fengjian.","published":"2026-02-19T21:22:41.188Z","modified":"2026-08-12T03:51:14.248817589Z","cvss":null,"epss":{"score":0.00447,"percentile":0.38066,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/ethereum/go-ethereum","fixedVersion":"1.16.9"}],"fix":{"url":"https://github.com/ethereum/go-ethereum/pull/33669","label":"ethereum/go-ethereum#33669"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26315.json"},{"type":"ADVISORY","url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-m6j8-rg6r-7mv8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26315"},{"type":"WEB","url":"https://github.com/ethereum/go-ethereum/pull/33669"},{"type":"WEB","url":"https://github.com/ethereum/go-ethereum/commit/46bee92f9e64c0a06a12586a5d21cffc49d1ba8e"},{"type":"PACKAGE","url":"https://github.com/ethereum/go-ethereum"},{"type":"WEB","url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-4511"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.248817589Z"}}