{"cve":"CVE-2026-54452","nvd":{"published":"2026-09-14T17:17:47.330","modified":"2026-09-30T17:51:56.193","status":"Deferred","description":"safeurl is a server-side request forgery protection library. Prior to 0.2.4, the privateNetworks list in ip.go omits the IPv6 ranges 64:ff9b:1::/48, 5f00::/16, 3fff::/20, and 100:0:0:1::/64. When an application enables IPv6 with EnableIPv6(true), an attacker-controlled destination in one of these ranges is not recognized as non-public and can pass the SSRF destination check, potentially allowing access to resources hosted within the omitted ranges. IPv6 is disabled by default, and configurations that retain EnableIPv6(false) are not exposed to this bypass. This issue is fixed in version 0.2.4.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":6.3},"cvss_v3":null,"cwes":["CWE-918"],"references":["https://github.com/doyensec/safeurl/commit/d8f1021ea535b276f92999f0ec865da40e467016","https://github.com/doyensec/safeurl/pull/12","https://github.com/doyensec/safeurl/releases/tag/v0.2.4","https://github.com/doyensec/safeurl/security/advisories/GHSA-xgch-x3mx-cm3c"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-54452","score":0.00521,"percentile":0.43949,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-xgch-x3mx-cm3c","url":"https://osv.dev/vulnerability/GHSA-xgch-x3mx-cm3c","summary":"safeurl is Missing IPv6 CIDR Ranges in Blocklist","modified":"2026-07-21T19:19:10.724316633Z","packages":[{"ecosystem":"Go","name":"github.com/doyensec/safeurl","purl":"pkg:golang/github.com/doyensec/safeurl","ranges":["<0.2.4"],"fixed":["0.2.4"]}]},{"id":"GO-2026-5997","url":"https://osv.dev/vulnerability/GO-2026-5997","summary":"safeurl is Missing IPv6 CIDR Ranges in Blocklist in github.com/doyensec/safeurl","modified":"2026-07-21T19:15:35.881205153Z","packages":[{"ecosystem":"Go","name":"github.com/doyensec/safeurl","purl":"pkg:golang/github.com/doyensec/safeurl","ranges":["<0.2.4"],"fixed":["0.2.4"]}]}],"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."]}