---
id: CVE-2026-25679
title: >-
  url.Parse insufficiently validated the host/authority component and accepted
  some invalid URLs.
summary: >-
  url.Parse insufficiently validated the host/authority component and accepted
  some invalid URLs.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-425
  - CWE-1286
vendor: golang
product: go
affected:
  - go < 1.25.8
  - go = 1.26.0
patched:
  - go 1.25.8
published: '2026-03-06'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T13:17:30.067'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-25679'
references:
  - url: 'https://go.dev/cl/752180'
    label: security@golang.org
  - url: 'https://go.dev/issue/77578'
    label: security@golang.org
  - url: 'https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk'
    label: security@golang.org
  - url: 'https://pkg.go.dev/vuln/GO-2026-4601'
    label: security@golang.org
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tags:
  - nvd
  - cve.org
  - osv
  - go
epss: 0.00803
epssPercentile: 0.54772
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-03-10T13:36:26.554241Z'
ingestedAt: '2026-07-01T03:50:34.415Z'
aliases:
  - GO-2026-4601
  - BIT-golang-2026-25679
ecosystem: go
---

## Overview

url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.

## Affected

- `go < 1.25.8`
- `go = 1.26.0`

## Remediation

Upgrade past the affected range:

- `go 1.25.8`

## Package advisory (CVE-2026-25679)

Affected packages:

- `stdlib >= 1.26.0-0, < 1.26.1`

Patched in:

- `stdlib 1.26.1`

Source: https://osv.dev/vulnerability/GO-2026-4601