CVE-2023-23601
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
Firefox allowed navigation when dragging a URL from a cross-origin iframe into the same tab, which could lead to website spoofing attacks. The vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
Risk Assessment
An attacker could trick the user by displaying a fake page under a legitimate address, potentially leading to theft of credentials or other sensitive information.
Recommendation
Update Firefox to version 109 or later, Firefox ESR to 102.7 or later, and Thunderbird to 102.7 or later.
Other vulnerabilities in Firefox
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Same-origin policy bypass in the DevTools component. Fixed in Firefox 158 and Thunderbird 158.
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A vulnerability in the DOM: Web Authentication component causes a site isolation issue. It was fixed in Firefox 158 and Thunderbird 158.
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- CVE-2026-109740Critical
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. The flaw was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Original NVD description (English source)
Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS