Total CVEs

137,241

Critical Severity

3,307

High Severity

12,254

Last 7 Days

1,430
Quick preset (or use dates below)
Clear Filters
Showing 1 - 20 of 666 CVEs
CVE-2026-53900 MEDIUM - 4.3

Firefox for iOS preserved cookies set on the initial PDF request across cross-origin HTTP redirects in TemporaryDocument, allowing a malicious site to inject arbitrary cookies into requests to an unrelated target domain. This vulnerability was fixed in Firefox for iOS 152.0.

Vendor: Mozilla
Product: Firefox for iOS
Published: Jun 16, 2026
Source: NVD
CVE-2026-53899 MEDIUM - 6.5

Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.

Vendor: Mozilla
Product: Firefox for iOS
Published: Jun 16, 2026
Source: NVD
CVE-2026-12330 MEDIUM - 5.4

Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12329 MEDIUM - 5.3

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12328 HIGH - 8.1

Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerabil...

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12327 HIGH - 7.3

Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Fir...

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12326 HIGH - 7.3

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12325 MEDIUM - 6.5

Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12324 HIGH - 7.3

Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12323 MEDIUM - 5.4

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12322 MEDIUM - 5.4

Clickjacking issue in the Widget: Gtk component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12321 MEDIUM - 5.4

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12320 MEDIUM - 4.3

Information disclosure in the Password Manager component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12319 MEDIUM - 6.5

Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12318 HIGH - 7.3

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12317 HIGH - 7.5

Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12316 CRITICAL - 9.1

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12315 CRITICAL - 9.1

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12314 HIGH - 7.5

Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD
CVE-2026-12313 MEDIUM - 4.7

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Vendor: Mozilla
Product: Firefox
Published: Jun 16, 2026
Source: NVD