CVE-2025-66286

4.7 MEDIUM 0.2% exploit odds No fix listed Auth & access Browser & mail

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-04-23 13:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-05 17:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-04-23 13:16 UTC
Last modified: 2026-11-05 17:17 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-639 · Insecure direct object reference
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 4.7

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: None
Availability: None

Raw vector

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

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References

NVD record · CVE.org record