---
id: CVE-2025-66286
title: >-
  An API design flaw in WebKitGTK and WPE WebKit allows untrusted web content to
  unexpectedly perform IP connections, DNS lookups, and HTTP requests
summary: >-
  An API design flaw in WebKitGTK and WPE WebKit allows untrusted web content to
  unexpectedly perform IP connections, DNS lookups, and HTTP requests.
  Applications expect to use the

  WebPage::send-request signal handler to approve or reject …
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N'
cwe:
  - CWE-639
published: '2026-04-23'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66286'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2025-66286'
    label: secalert@redhat.com
  - url: 'https://bugs.webkit.org/show_bug.cgi?id=259787'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2424652'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00233
epssPercentile: 0.13071
ingestedAt: '2026-10-14T13:30:58.483Z'
---

## Overview

An API design flaw in WebKitGTK and WPE WebKit allows untrusted web content to unexpectedly perform IP connections, DNS lookups, and HTTP requests. Applications expect to use the
WebPage::send-request signal handler to approve or reject all network requests. However, certain types of HTTP requests bypass this signal handler.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.