{"cve":"CVE-2021-3121","nvd":{"published":"2021-01-11T06:15:13.460","modified":"2026-06-17T04:04:42.213","status":"Modified","description":"An issue was discovered in GoGo Protobuf before 1.3.2. plugin/unmarshal/unmarshal.go lacks certain index validation, aka the \"skippy peanut butter\" issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","score":8.6},"cwes":["CWE-129"],"references":["https://discuss.hashicorp.com/t/hcsec-2021-23-consul-exposed-to-denial-of-service-in-gogo-protobuf-dependency/29025","https://github.com/gogo/protobuf/commit/b03c65ea87cdc3521ede29f62fe3ce239267c1bc","https://github.com/gogo/protobuf/compare/v1.3.1...v1.3.2","https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff%40%3Cnotifications.skywalking.apache.org%3E","https://lists.apache.org/thread.html/r88d69555cb74a129a7bf84838073b61259b4a3830190e05a3b87994e%40%3Ccommits.pulsar.apache.org%3E"],"products":["golang:protobuf","hashicorp:consul"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2021-3121","score":0.03425,"percentile":0.88921,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c3h9-896r-86jm","url":"https://osv.dev/vulnerability/GHSA-c3h9-896r-86jm","summary":"Improper Input Validation in GoGo Protobuf","modified":"2026-09-10T03:49:28.264074034Z","packages":[{"ecosystem":"Go","name":"github.com/gogo/protobuf","purl":"pkg:golang/github.com/gogo/protobuf","ranges":["<1.3.2"],"fixed":["1.3.2"]}]},{"id":"GO-2021-0053","url":"https://osv.dev/vulnerability/GO-2021-0053","summary":"Panic due to improper input validation in github.com/gogo/protobuf","modified":"2026-02-04T03:28:45.369468Z","packages":[{"ecosystem":"Go","name":"github.com/gogo/protobuf","purl":"pkg:golang/github.com/gogo/protobuf","ranges":["<1.3.2"],"fixed":["1.3.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}