Linux · 
openSUSE Leap · Security advisory · March 27, 2026
openSUSE Leap · Security advisory · March 27, 2026OPENSUSE-SU-2026:20439-1: MozillaFirefox security update
OPENSUSE-SU-2026:20439-1, released March 27, 2026, fixes 38 CVEs in MozillaFirefox (version 140.9.0-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
38
None rated Critical
Exploited
0
None reported
Highest CVSS
10.0
Base score, 0 to 10
Highest EPSS
0.0138
72nd percentile
Priority of the 38 CVEs
Patch now 0
Urgent 0
High 38
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| MozillaFirefox | opensuse-leap 16.0 | 140.9.0-160000.1.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-59375 | libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. | 8.1 | 0.0138 | None reported |
| High | CVE-2026-4696 | Use-after-free in the Layout: Text and Fonts component | 9.8 | 0.0097 | None reported |
| High | CVE-2026-4700 | Mitigation bypass in the Networking: HTTP component | 9.8 | 0.0092 | None reported |
| High | CVE-2026-4690 | Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component | 8.6 | 0.0080 | None reported |
| High | CVE-2026-4694 | Incorrect boundary conditions, integer overflow in the Graphics component | 8.2 | 0.0080 | None reported |
| High | CVE-2026-4698 | JIT miscompilation in the JavaScript Engine: JIT component | 9.8 | 0.0079 | None reported |
| High | CVE-2026-4686 | Incorrect boundary conditions in the Graphics: Canvas2D component | 8.2 | 0.0073 | None reported |
| High | CVE-2026-4685 | Incorrect boundary conditions in the Graphics: Canvas2D component | 8.2 | 0.0071 | None reported |
| High | CVE-2026-4693 | Incorrect boundary conditions in the Audio/Video: Playback component | 8.2 | 0.0071 | None reported |
| High | CVE-2026-4695 | Incorrect boundary conditions in the Audio/Video: Web Codecs component | 8.2 | 0.0071 | None reported |
| High | CVE-2026-4697 | Incorrect boundary conditions in the Audio/Video: Web Codecs component | 8.2 | 0.0071 | None reported |
| High | CVE-2026-4699 | Incorrect boundary conditions in the Layout: Text and Fonts component | 8.2 | 0.0071 | None reported |
| High | CVE-2026-4702 | JIT miscompilation in the JavaScript Engine component | 9.8 | 0.0070 | None reported |
| High | CVE-2026-4689 | Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component | 10.0 | 0.0069 | None reported |
| High | CVE-2026-4705 | Undefined behavior in the WebRTC: Signaling component | 9.8 | 0.0066 | None reported |
| High | CVE-2026-4704 | Denial-of-service in the WebRTC: Signaling component | 8.2 | 0.0065 | None reported |
| High | CVE-2026-4707 | Incorrect boundary conditions in the Graphics: Canvas2D component | 8.2 | 0.0060 | None reported |
| High | CVE-2026-4687 | Sandbox escape due to incorrect boundary conditions in the Telemetry component | 8.6 | 0.0056 | None reported |
| High | CVE-2026-4688 | Sandbox escape due to use-after-free in the Disability Access APIs component | 10.0 | 0.0055 | None reported |
| High | CVE-2026-4692 | Sandbox escape in the Responsive Design Mode component | 10.0 | 0.0051 | None reported |
| High | CVE-2026-4691 | Use-after-free in the CSS Parsing and Computation component | 9.8 | 0.0050 | None reported |
| High | CVE-2026-4709 | Incorrect boundary conditions in the Audio/Video: GMP component | 8.2 | 0.0048 | None reported |
| High | CVE-2026-4718 | Undefined behavior in the WebRTC: Signaling component | 8.2 | 0.0048 | None reported |
| High | CVE-2026-4701 | Use-after-free in the JavaScript Engine component | 9.8 | 0.0048 | None reported |
| High | CVE-2026-4706 | Incorrect boundary conditions in the Graphics: Canvas2D component | 8.2 | 0.0047 | None reported |
Showing 1 to 25 of 38
1Next
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.