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CVE-2026-118026

Invalid pointer in the JavaScript: GC component

Invalid pointer in the JavaScript: GC component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118023

Sandbox escape due to use-after-free in the Graphics: WebRender component

Sandbox escape due to use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118022

Sandbox escape due to use-after-free in the Disability Access APIs component

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118020

Use-after-free in the Layout component

Use-after-free in the Layout component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118018

Spoofing issue in the Downloads component in Firefox for Android

Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118017

Use-after-free in the SVG component

Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118016

Use-after-free in the DOM: Core & HTML component

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118015

Use-after-free in the DOM: Core & HTML component

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118013

Use-after-free in the Layout: Images, Video, and HTML Frames component

Use-after-free in the Layout: Images, Video, and HTML Frames component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118012

Use-after-free in the DOM: Animation component

Use-after-free in the DOM: Animation component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118011

Frame poisoning in the CSS Parsing and Computation component

Frame poisoning in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118010

Use-after-free in the Disability Access APIs component

Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118009

Integer overflow, use-after-free in the Graphics: Text component

Integer overflow, use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118006

Privilege escalation due to use-after-free in the WebRTC: Signaling component

Privilege escalation due to use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118005

Use-after-free in the WebRTC: Signaling component

Use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118004

Incorrect boundary conditions in the CSS Transitions and Animations component

Incorrect boundary conditions in the CSS Transitions and Animations component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-118003

Information disclosure in the Networking: DNS component

Information disclosure in the Networking: DNS component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-117994

Use-after-free in the JavaScript: GC component

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-117993

Integer overflow in the Graphics: Text component

Integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-117992

Information disclosure in the CSS Parsing and Computation component

Information disclosure in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox