Skip to content
appaloosa scout logo main rounded
MEDIUM 6.5

CVE-2025-4088

A security vulnerability in Thunderbird allowed malicious sites to use redirects to send credentialed requests to arbitrary endpoints on any site that had invoked the Storage Access API. This enabled potential Cross-Site Request Forgery attacks across origins. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

CVSS v3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS 0.1% percentile 29.9%

Affected tracked apps

Vulnerable CPE configurations

Vendor Product Platform Versions CPE 2.3 URI
mozilla thunderbird Windows <138.0 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
View on NVD ↗