{"schema_version":"1.9.0","id":"BIT-golang-2026-27137","published":"2026-03-10T08:44:11.145Z","modified":"2026-09-08T08:47:49.112066541Z","aliases":["CVE-2026-27137","GO-2026-4599"],"summary":"Incorrect enforcement of email constraints in crypto/x509","details":"When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.","affected":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.26.0-0"},{"fixed":"1.26.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-27137.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"references":[{"type":"DISCUSSION","url":"https://go.dev/cl/752182"},{"type":"REPORT","url":"https://go.dev/issue/77952"},{"type":"ARTICLE","url":"https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27137"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-4599"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10125"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10158"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10169"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10175"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10184"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10225"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10250"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10929"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:11800"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:13545"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:14879"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19022"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19049"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19132"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19181"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19375"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21769"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22347"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22423"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22450"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22714"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22862"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22937"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:23228"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:23345"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26568"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26585"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28038"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28047"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29854"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:5110"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:5549"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:7291"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8151"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8167"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8337"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8338"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8842"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9052"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9385"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9697"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9698"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9699"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9872"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-27137"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2445345"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27137.json"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36796"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:39810"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41019"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41928"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:54757"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:49702"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:49703"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:49712"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:56143"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:56223"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:57649"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:6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