Go net/url Host Validation Flaw in Parse (v<1.25.8, <1.26.1)
CVE-2026-25679 Published on March 6, 2026
Incorrect parsing of IPv6 host literals in net/url
url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
Vulnerability Analysis
CVE-2026-25679 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Improper Validation of Syntactic Correctness of Input
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.
Products Associated with CVE-2026-25679
Want to know whenever a new CVE is published for Red Hat products? stack.watch will email you.
Affected Versions
Go standard library net/url:- Before 1.25.8 is affected.
- Version 1.26.0-0 and below 1.26.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.