Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/doyensec/safeurl/commit/d8f1021ea535b276f92999f0ec865da40e467
- 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
FAQ
What is CVE-2026-54452?
CVE-2026-54452 is a documented vulnerability. 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 a...
How severe is CVE-2026-54452?
CVSS scoring is not yet available for CVE-2026-54452. Check NVD for updates.
Is there a patch for CVE-2026-54452?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.