SEPTEMBER 19, 2026
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Case File

CVE-2026-74963

MEDIUM · CVSS 5.4 EPSS 0.12%

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

CyberRota Analysis

AI-Generated

A same-origin policy bypass vulnerability exists in the Networking: Cookies component of Firefox, potentially allowing attackers to access sensitive data across different origins. This could lead to unauthorized information disclosure, impacting user privacy and security. Users and organizations utilizing affected versions of Firefox should prioritize updating to the latest releases to mitigate this risk.

CVE
CVE-2026-74963
Severity
MEDIUM
CVSS
5.4
EPSS
0.12%
Firefox

Original NVD Description

Same-origin policy bypass 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