{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32280", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-03-11T16:38:46.555Z", "datePublished": "2026-04-08T01:06:58.595Z", "dateUpdated": "2026-04-08T01:06:58.595Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-04-08T01:06:58.595Z"}, "title": "Unexpected work during chain building in crypto/x509", "descriptions": [{"lang": "en", "value": "During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls."}], "affected": [{"vendor": "Go standard library", "product": "crypto/x509", "collectionURL": "https://pkg.go.dev", "packageName": "crypto/x509", "versions": [{"version": "0", "lessThan": "1.25.9", "status": "affected", "versionType": "semver"}, {"version": "1.26.0-0", "lessThan": "1.26.2", "status": "affected", "versionType": "semver"}], "programRoutines": [{"name": "Certificate.buildChains"}, {"name": "Certificate.Verify"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "references": [{"url": "https://go.dev/cl/758320"}, {"url": "https://go.dev/issue/78282"}, {"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4947"}], "credits": [{"lang": "en", "value": "Jakub Ciolek - https://ciolek.dev"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls."}], "id": "CVE-2026-32280", "lastModified": "2026-04-08T02:16:03.247", "metrics": {}, "published": "2026-04-08T02:16:03.247", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/758320"}, {"source": "security@golang.org", "url": "https://go.dev/issue/78282"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-4947"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Received"}

{}

{}