{"id":"CVE-2026-56851","sourceIdentifier":"security@golang.org","published":"2026-10-07T18:17:20.903","lastModified":"2026-10-08T21:35:53.890","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer."}],"affected":[{"source":"security@golang.org","affectedData":[{"vendor":"golang.org/x/text","product":"golang.org/x/text/secure/precis","defaultStatus":"unaffected","collectionURL":"https://pkg.go.dev","packageName":"golang.org/x/text/secure/precis","programRoutines":[{"name":"nickAdditionalMapping.Transform"},{"name":"Profile.Append"},{"name":"Profile.AppendCompareKey"},{"name":"Profile.Bytes"},{"name":"Profile.Compare"},{"name":"Profile.CompareKey"},{"name":"Profile.NewTransformer"},{"name":"Profile.String"},{"name":"Transformer.Bytes"},{"name":"Transformer.String"},{"name":"Transformer.Transform"}],"versions":[{"version":"0","lessThan":"0.41.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-08T13:48:57.351617Z","id":"CVE-2026-56851","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-787"}]}],"references":[{"url":"https://go.dev/cl/793360","source":"security@golang.org"},{"url":"https://go.dev/issue/80112","source":"security@golang.org"},{"url":"https://pkg.go.dev/vuln/GO-2026-6629","source":"security@golang.org"}]}