CVE-2025-66286
Webkitgtk: authorization bypass through webpage::send-request signal handler
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.
INFO
Published Date :
April 23, 2026, 1:16 p.m.
Last Modified :
April 23, 2026, 1:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-66286
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update WebKitGTK and WPE WebKit to the latest version.
- Ensure all network requests are properly validated.
- Review and reinforce signal handler logic.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-66286.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-66286 | |
| https://bugs.webkit.org/show_bug.cgi?id=259787 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2424652 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-66286 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-66286
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-66286 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-66286 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N Added CWE CWE-639 Added Reference https://access.redhat.com/security/cve/CVE-2025-66286 Added Reference https://bugs.webkit.org/show_bug.cgi?id=259787 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2424652