Total
1634 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
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| CVE-2026-2805 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Invalid pointer in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
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| CVE-2026-2807 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Memory safety bugs present in Firefox 147 and Thunderbird 147. 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 affects Firefox < 148 and Thunderbird < 148.
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| CVE-2026-2793 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2792 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2777 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2782 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2771 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 9.8 CRITICAL |
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Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2798 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 8.8 HIGH |
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Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
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| CVE-2026-2802 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 4.2 MEDIUM |
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Race condition in the JavaScript: GC component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
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| CVE-2026-2804 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 5.4 MEDIUM |
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Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
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| CVE-2026-2769 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-25 | N/A | 8.8 HIGH |
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Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
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| CVE-2026-2447 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-02-22 | N/A | 8.8 HIGH |
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Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1, Firefox ESR < 115.32.1, Thunderbird < 140.7.2, and Thunderbird < 147.0.2.
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| CVE-2026-0818 | 1 Mozilla | 1 Thunderbird | 2026-02-04 | N/A | 4.3 MEDIUM |
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When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted contents were rendered in a context in which the CSS styles from the outer messages were active. If the user had additionally allowed loading of the remote content referenced by the outer email message, and the email was crafted by the sender using a combination of CSS rules and fonts and animations, ...
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| CVE-2026-0892 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 9.8 CRITICAL |
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Memory safety bugs present in Firefox 146 and Thunderbird 146. 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 affects Firefox < 147 and Thunderbird < 147.
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| CVE-2026-0891 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 8.1 HIGH |
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Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. 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 affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0890 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 5.4 MEDIUM |
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Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0889 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 7.5 HIGH |
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Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
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| CVE-2026-0888 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 5.3 MEDIUM |
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Information disclosure in the XML component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
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| CVE-2026-0887 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 4.3 MEDIUM |
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Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0886 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 5.3 MEDIUM |
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Incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0883 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 5.3 MEDIUM |
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Information disclosure in the Networking component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0884 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 9.8 CRITICAL |
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Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0885 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 6.5 MEDIUM |
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Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0878 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 8.0 HIGH |
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Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0877 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 8.1 HIGH |
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Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0881 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 10.0 CRITICAL |
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Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
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| CVE-2026-0882 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 8.8 HIGH |
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Use-after-free in the IPC component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0880 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 8.8 HIGH |
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Sandbox escape due to integer overflow in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2026-0879 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-22 | N/A | 9.8 CRITICAL |
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Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
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| CVE-2025-14327 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-15 | N/A | 7.5 HIGH |
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Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7.
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| CVE-2025-14333 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-13 | N/A | 8.1 HIGH |
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Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
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| CVE-2025-14325 | 1 Mozilla | 2 Firefox, Thunderbird | 2026-01-07 | N/A | 7.3 HIGH |
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JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
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| CVE-2023-4582 | 2 Apple, Mozilla | 4 Macos, Firefox, Firefox Esr and 1 more | 2025-12-18 | N/A | 8.8 HIGH |
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Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occurred when allocating too much private shader memory on mac OS.
*This bug only affects Firefox on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
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| CVE-2023-3600 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 8.8 HIGH |
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During the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.
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| CVE-2023-23605 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 8.8 HIGH |
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Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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| CVE-2023-23603 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 6.5 MEDIUM |
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Regular expressions used to filter out forbidden properties and values from style directives in calls to `console.log` weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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| CVE-2023-23602 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 6.5 MEDIUM |
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A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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| CVE-2023-23601 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 6.5 MEDIUM |
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Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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| CVE-2023-23599 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 6.5 MEDIUM |
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When copying a network request from the developer tools panel as a curl command the output was not being properly sanitized and could allow arbitrary commands to be hidden within. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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| CVE-2023-23598 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2025-12-18 | N/A | 6.5 MEDIUM |
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Due to the Firefox GTK wrapper code's use of text/plain for drag data and GTK treating all text/plain MIMEs containing file URLs as being dragged a website could arbitrarily read a file via a call to `DataTransfer.setData`. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
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