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CVE-2025-4088

Medium

Description

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.

SeverityMedium
CVSS6.5
Exploit probability—
ProductMozilla Firefox
PublishedApr 29, 2025
First seenApr 29, 2025
Weakness typeCWE-352Cross-site request forgery (CSRF)

How to fix

Update
  • mozilla firefox138.0 or later
  • mozilla thunderbird138.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 138.0138.0
mozilla thunderbirdv < 138.0138.0

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