CVE-2025-66286

MEDIUM

Webkitgtk: authorization bypass through webpage::send-request signal handler

Title source: cna

Description

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.

References (3)

[Vdb Entry, X_Refsource_Redhat] https://access.redhat.com/security/cve/CVE-2025-66286

https://bugs.webkit.org/show_bug.cgi?id=259787

[Issue Tracking, X_Refsource_Redhat] https://bugzilla.redhat.com/show_bug.cgi?id=2424652

Scores

CVSS v3 4.7

EPSS 0.0003

EPSS Percentile 8.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (4)

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Published Apr 23, 2026

Tracked Since Apr 23, 2026