An API design flaw in WebKitGTK and WPE WebKit allows untrusted web content to unexpectedly perform IP connections, DNS lookups, and HTTP requests.

Code

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No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 23, 2026 · NIST NVD

   Detected

   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.

2. Oct 14, 2026 · NIST NVD

   Updated

   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.

Sources

• CVE.orgVulnerability recordCVE-2025-66286

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2025-66286

  30-day exploitation probability 0.2%

  first.org
• NIST NVDVulnerability recordCVE-2025-66286

  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 type

  nvd.nist.gov

References

• Reference · access.redhat.com
• Reference · bugs.webkit.org
• Reference · bugzilla.redhat.com