{"schema_version":"1.9.0","id":"BIT-golang-2026-56864","published":"2026-08-19T11:37:52.101Z","modified":"2026-08-19T12:25:49.995487491Z","aliases":["CVE-2026-56864","GO-2026-6180"],"summary":"Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb","details":"A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy","affected":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.25.13"},{"introduced":"1.26.0-0"},{"fixed":"1.26.6"},{"introduced":"1.27.0-0"},{"fixed":"1.27.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-56864.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}],"references":[{"type":"WEB","url":"https://go.dev/cl/815000"},{"type":"WEB","url":"https://go.dev/cl/815020"},{"type":"WEB","url":"https://go.dev/issue/80745"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/94pEornpRlI"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56864"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-6180"}],"database_specific":{"cpes":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"],"severity":"High"}}