Windows apps · Application version · May 13, 2026
Firefox Developer Edition (te) 151.0
Firefox Developer Edition (te) 151.0, released May 13, 2026, fixes 88 CVEs in Firefox Developer Edition (te). None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
88
4 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0388
90th percentile
Priority of the 88 CVEs
Patch now 0
Urgent 4
High 75
Routine 9
Applies to
| Product | Version |
|---|---|
| Firefox Developer Edition (te) | 151.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-8948 | Same-origin policy bypass in the DOM: Networking component | 9.1 | 0.0042 | None reported |
| Urgent | CVE-2026-6768 | Mitigation bypass in the Networking: Cookies component | 9.8 | 0.0029 | None reported |
| Urgent | CVE-2026-6760 | Mitigation bypass in the Networking: Cookies component | 9.8 | 0.0028 | None reported |
| Urgent | CVE-2026-5735 | Memory safety bugs fixed in Firefox 149.0.2 and Thunderbird 149.0.2 | 9.8 | 0.0027 | None reported |
| High | CVE-2026-6770 | Other issue in the Storage: IndexedDB component | 8.8 | 0.0388 | None reported |
| High | CVE-2026-6746 | Use-after-free in the DOM: Core & HTML component | 8.8 | 0.0095 | None reported |
| High | CVE-2026-6758 | Use-after-free in the JavaScript: WebAssembly component | 7.5 | 0.0081 | None reported |
| High | CVE-2026-8956 | Integer overflow in the Networking: JAR component | 9.8 | 0.0061 | None reported |
| High | CVE-2026-8949 | Integer overflow in the Widget: Win32 component | 7.5 | 0.0058 | None reported |
| High | CVE-2026-8946 | Incorrect boundary conditions in the Audio/Video: Web Codecs component | 7.5 | 0.0056 | None reported |
| High | CVE-2026-8953 | Sandbox escape due to use-after-free in the Disability Access APIs component | 9.6 | 0.0053 | None reported |
| High | CVE-2026-6785 | Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150 | 8.8 | 0.0051 | None reported |
| High | CVE-2026-6786 | Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150 | 8.8 | 0.0050 | None reported |
| High | CVE-2026-8390 | Use-after-free in the JavaScript: WebAssembly component | 7.3 | 0.0050 | None reported |
| High | CVE-2026-6757 | Invalid pointer in the JavaScript: WebAssembly component | 8.8 | 0.0049 | None reported |
| High | CVE-2026-6750 | Privilege escalation in the Graphics: WebRender component | 8.8 | 0.0048 | None reported |
| High | CVE-2026-8975 | Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151 | 8.8 | 0.0047 | None reported |
| High | CVE-2026-8954 | Incorrect boundary conditions, integer overflow in the Audio/Video component | 7.5 | 0.0043 | None reported |
| High | CVE-2026-8389 | JIT miscompilation in the JavaScript Engine: JIT component | 8.8 | 0.0042 | None reported |
| High | CVE-2026-8959 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component | 9.6 | 0.0042 | None reported |
| High | CVE-2026-8947 | Use-after-free in the DOM: Bindings (WebIDL) component | 7.5 | 0.0041 | None reported |
| High | CVE-2026-8968 | Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component | 7.5 | 0.0041 | None reported |
| High | CVE-2026-6749 | Information disclosure due to uninitialized memory in the Graphics: Canvas2D component | 8.8 | 0.0040 | None reported |
| High | CVE-2026-6747 | Use-after-free in the WebRTC component | 8.8 | 0.0040 | None reported |
| High | CVE-2026-6748 | Uninitialized memory in the Audio/Video: Web Codecs component | 9.8 | 0.0040 | None reported |
Showing 1 to 25 of 88
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