CVE-2025-66286

MEDIUM 4.7

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

CVSS Score

4.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	red hat
Product	red hat enterprise linux 6
Published	Apr 23, 2026
Last Updated	Apr 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

Red Hat / Red Hat Enterprise Linux 6

All versions affected

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/security/cve/CVE-2025-66286 bugs.webkit.org: https://bugs.webkit.org/show_bug.cgi?id=259787 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2424652

Credits

Red Hat would like to thank Albrecht Dreß for reporting this issue.