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CVE-2026-24869

Use-after-free in the Layout: Scrolling and Overflow component

Use-after-free in the Layout: Scrolling and Overflow component. This vulnerability was fixed in Firefox 147.0.2.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-2447

Heap buffer overflow in libvpx

Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2032

Interrupted page loads in new tabs could allow website spoofing under trusted domains in Firefox iOS

Malicious scripts that interrupt new tab page loading could cause desynchronization between the address bar and page content, allowing the attacker to spoof arbitrary HTML under a trusted domain. This vulnerability was fixed in Firefox for iOS 147.2.1.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox For Ios
CVE-2026-2757

Incorrect boundary conditions in the WebRTC: Audio/Video component

Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2758

Use-after-free in the JavaScript: GC component

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2759

Incorrect boundary conditions in the Graphics: ImageLib component

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2760

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2761

Sandbox escape in the Graphics: WebRender component

Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2763

Use-after-free in the JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2768

Sandbox escape in the Storage: IndexedDB component

Sandbox escape in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2769

Use-after-free in the Storage: IndexedDB component

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2770

Use-after-free in the DOM: Bindings (WebIDL) component

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2774

Integer overflow in the Audio/Video component

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2780

Privilege escalation in the Netmonitor component

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2782

Privilege escalation in the Netmonitor component

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2783

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2785

Invalid pointer in the JavaScript Engine component

Invalid pointer in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2786

Use-after-free in the JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2787

Use-after-free in the DOM: Window and Location component

Use-after-free in the DOM: Window and Location component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird
CVE-2026-2789

Use-after-free in the Graphics: ImageLib component

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox Firefox Esr Thunderbird