CVE Vulnerability Catalog

Translated CVE descriptions from NVD NIST - in English

CISA KEV catalog updated: (v2026.08.21)

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CVE-2026-74983
High

Mitigation bypass in the Data Loss Prevention component. Fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74982
High

Denial-of-service vulnerability in the Widget component. Fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74981
High

Site isolation issue in the Audio/Video: Web Codecs component. Fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74978
High

Clickjacking vulnerability in the Widget component in Firefox and Thunderbird. The issue was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74977
High

Integer overflow in the Graphics component in Firefox and Thunderbird. The issue was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74969
High

Use-after-free in the Layout: Text and Fonts component. Fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74966
High

Information disclosure in the Form Autofill component. Fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74965
High

Privilege escalation in the Shell Integration component in Firefox and Thunderbird. The issue was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74962
High

Site isolation issue in the Networking: Cookies component. Fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74960
High

Vulnerability in the WebExtensions component related to site isolation. The flaw was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, and Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74958
High

Information disclosure in the WebRTC component in Firefox and Thunderbird. The issue was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74957
High

Vulnerability in the Safe Browsing component involving a mitigation bypass. The flaw was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, and Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-74955
High

Privilege escalation in the Request Handling component in Firefox and Thunderbird. The issue was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74954
High

Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74953
High

Privilege escalation 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.

CVE-2026-74952
High

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 154 and Thunderbird 154.

CVE-2026-74950
High

Privilege escalation in the Downloads API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74949
High

Privilege escalation due to use-after-free in the Graphics: Canvas2D 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.

CVE-2026-74947
High

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74946
High

Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

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Vulnerability data from NVD (NIST) · CISA KEV · EPSS