SEPTEMBER 19, 2026
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Case File

CVE-2026-74962

HIGH · CVSS 8.1 EPSS 0.16%

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A site isolation vulnerability in the Networking: Cookies component of Firefox could potentially allow attackers to exploit cookie data across different sites, leading to unauthorized access or data leakage. Users and organizations utilizing affected versions of Firefox should prioritize updating to Firefox 154, Firefox ESR 140.14, or Firefox ESR 153.1 to mitigate the risk.

CVE
CVE-2026-74962
Severity
HIGH
CVSS
8.1
EPSS
0.16%
Firefox

Original NVD Description

Site isolation issue in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-84642 HIGH CVE-2026-84641 HIGH CVE-2026-84640 HIGH CVE-2026-84639 CRITICAL CVE-2026-84637 CRITICAL CVE-2026-84145 HIGH