Vulnerability Description
Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to "*.example.com", a request to "[::1%25.example.com]:80` will incorrectly match and not be proxied.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://go.dev/cl/654697
- https://go.dev/issue/71984
- https://groups.google.com/g/golang-announce/c/4t3lzH3I0eI/m/b42ImqrBAQAJ
- https://pkg.go.dev/vuln/GO-2025-3503
- http://www.openwall.com/lists/oss-security/2025/03/07/2
- https://security.netapp.com/advisory/ntap-20250509-0007/
FAQ
What is CVE-2025-22870?
CVE-2025-22870 is a vulnerability with a CVSS score of 4.4 (MEDIUM). Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to "*.example.com", a request to "[::1...
How severe is CVE-2025-22870?
CVE-2025-22870 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-22870?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.