CVE-2025-14331
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Risk Assessment
A same-origin policy bypass may allow an attacker to access data from other sites and break content isolation. Affects Firefox and Thunderbird users.
Recommendation
Update Firefox to version 146 or ESR 115.31/140.6 and Thunderbird to version 146 or 140.6.
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Original NVD description (English source)
Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS