{"cve":"CVE-2021-3908","nvd":{"published":"2021-11-11T22:15:07.877","modified":"2026-06-17T04:05:58.257","status":"Modified","description":"OctoRPKI does not limit the depth of a certificate chain, allowing for a CA to create children in an ad-hoc fashion, thereby making tree traversal never end.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-835","CWE-400"],"references":["https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g5gj-9ggf-9vmq","https://www.debian.org/security/2022/dsa-5041","https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g5gj-9ggf-9vmq","https://www.debian.org/security/2022/dsa-5041"],"products":["cloudflare:octorpki","debian:debian_linux"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-3908","score":0.00731,"percentile":0.54298,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g5gj-9ggf-9vmq","url":"https://osv.dev/vulnerability/GHSA-g5gj-9ggf-9vmq","summary":"Infinite certificate chain depth results in OctoRPKI running forever","modified":"2026-07-08T06:28:05.541665796Z","packages":[{"ecosystem":"Go","name":"github.com/cloudflare/cfrpki","purl":"pkg:golang/github.com/cloudflare/cfrpki","ranges":["<1.4.0"],"fixed":["1.4.0"]}]},{"id":"GO-2022-0249","url":"https://osv.dev/vulnerability/GO-2022-0249","summary":"Infinite certificate chain depth results in OctoRPKI running forever in github.com/cloudflare/cfrpki","modified":"2026-03-03T04:52:05.068387Z","packages":[{"ecosystem":"Go","name":"github.com/cloudflare/cfrpki","purl":"pkg:golang/github.com/cloudflare/cfrpki","ranges":["<1.4.0"],"fixed":["1.4.0"]}]}],"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."]}