{"id":"CVE-2021-38561","aliases":["GHSA-ppp9-7jff-5vj2","GO-2021-0113"],"url":"https://o3.security/vulnerability/CVE-2021-38561","summary":"golang.org/x/text/language Out-of-bounds Read vulnerability","details":"golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing. Index calculation is mishandled. If parsing untrusted user input, this can be used as a vector for a denial-of-service attack.","published":"2022-12-26T06:15:10.560Z","modified":"2026-07-08T22:13:57.183890Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"golang.org/x/text","fixedVersion":"0.3.7"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://groups.google.com/g/golang-announce"},{"type":"ADVISORY","url":"https://pkg.go.dev/golang.org/x/text/language"},{"type":"FIX","url":"https://deps.dev/advisory/OSV/GO-2021-0113"},{"type":"FIX","url":"https://go.googlesource.com/text/+/383b2e75a7a4198c42f8f87833eefb772868a56f"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T22:13:57.183890Z"}}