CVE-2025-47912
Insufficient validation of bracketed IPv6 hostnames in net/url
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 29, 2025
- Updated
- Nov 4, 2025
- Reserved
- May 13, 2025
Description
The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://[::1]/". IPv4 addresses and hostnames must not appear within square brackets. Parse did not enforce this requirement.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
net/urlGo standard library |
|
References
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