CVE-2025-47912: medium-severity vulnerability in Go standard library net/url
Insufficient validation of bracketed IPv6 hostnames in net/url
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
Go standard library · net/urlRelated CVEs — Go standard library net/url
In the same product, most dangerous first.
CVE-2025-61726HIGHMemory exhaustion in query parameter parsing in net/urlEPSS 2.3%CVE-2022-32190—Failure to strip relative path components in net/urlEPSS 2.2%CVE-2026-25679HIGHIncorrect parsing of IPv6 host literals in net/urlEPSS 0.8%CVE-2026-56860MEDIUMAvoid quadratic complexity in resolvePath in net/urlEPSS 0.5%