Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3978 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-100813 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVE-2026-100814 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
CVE-2026-100815 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
CVE-2026-100816 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.1 HIGH
Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
CVE-2026-100818 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 9.6 CRITICAL
Sandbox escape due to use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
CVE-2026-100823 1 Mozilla 1 Firefox Mobile 2026-10-05 N/A 5.4 MEDIUM
Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 157.
CVE-2026-100777 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100778 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 9.6 CRITICAL
Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100779 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2026-100780 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVE-2025-8027 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 6.5 MEDIUM
On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
CVE-2025-0240 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 4.0 MEDIUM
Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
CVE-2025-1012 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 7.5 HIGH
A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
CVE-2025-1011 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
CVE-2025-1930 1 Mozilla 2 Firefox, Thunderbird 2026-10-05 N/A 8.8 HIGH
On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-after-free in the Browser process. This could have led to a sandbox escape. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
CVE-2025-0246 2 Google, Mozilla 2 Android, Firefox 2026-10-05 N/A 6.5 MEDIUM
When using an invalid protocol scheme, an attacker could spoof the address bar. *Note: This issue only affected Android operating systems. Other operating systems are unaffected.* *Note: This issue is a different issue from CVE-2025-0244. This vulnerability was fixed in Firefox 134.
CVE-2025-8364 2 Google, Mozilla 2 Android, Firefox 2026-10-05 N/A 4.3 MEDIUM
A crafted URL using a blob: URI could have hidden the true origin of the page, resulting in a potential spoofing attack. *Note: This issue only affected Android operating systems. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 141.
CVE-2025-2857 1 Mozilla 1 Firefox 2026-10-05 N/A 10.0 CRITICAL
Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 136.0.4, Firefox ESR 128.8.1, and Firefox ESR 115.21.1.
CVE-2025-5020 1 Mozilla 1 Firefox 2026-10-05 N/A 4.3 MEDIUM
Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139.
CVE-2025-55030 1 Mozilla 1 Firefox 2026-10-05 N/A 6.1 MEDIUM
Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.