Enhanced Tracking Protection's Strict mode may have inadvertently allowed a CSP `frame-src` bypass and DOM-based XSS through the Google SafeFrame shim in the Web Compatibility extension. This issue could have exposed users to malicious frames masquerading as legitimate content. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.
2024-11-26T14:15:18.943
2025-06-24T17:01:25.223
Analyzed
CVSSv3.1: 6.1 (MEDIUM)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mozilla | firefox | < 115.8.0 | Yes |
Application | mozilla | firefox | < 133.0 | Yes |
Application | mozilla | firefox | < 128.5.0 | Yes |
Application | mozilla | thunderbird | < 115.18.0 | Yes |
Application | mozilla | thunderbird | < 128.5.0 | Yes |
Application | mozilla | thunderbird | < 133.0 | Yes |