The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary....
9.8CVSS
9.3AI Score
0.205EPSS
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird....
9.8CVSS
9.1AI Score
0.139EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 65, Firefox ESR 60.5, and Thunderbird 60.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This...
9.8CVSS
9.9AI Score
0.007EPSS
A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firef...
9.8CVSS
9.3AI Score
0.008EPSS
Cross-origin images can be read from a canvas element in violation of the same-origin policy using the transferFromImageBitmap method. Note: This only affects Firefox 65. Previous versions are unaffected.. This vulnerability affects Firefox <...
4.3CVSS
5.5AI Score
0.004EPSS
The about:crashcontent and about:crashparent pages can be triggered by web content. These pages are used to crash the loaded page or the browser for test purposes. This issue allows for a non-persistent denial of service (DOS) attack by a malicious site which links to these pages. This...
6.5CVSS
6.7AI Score
0.001EPSS
Unsanitized output in the browser UI leaves HTML tags in place and can result in arbitrary code execution in Firefox before version...
6.1CVSS
6.5AI Score
0.001EPSS
A service worker can send the activate event on itself periodically which allows it to run perpetually, allowing it to monitor activity by users. Affects all versions prior to Firefox...
7.5CVSS
6.7AI Score
0.002EPSS
Use of uninitialized memory in Graphite2 library in Firefox before 54 in graphite2::GlyphCache::Loader::read_glyph...
8.8CVSS
9.3AI Score
0.003EPSS
Out-of-bounds read in Graphite2 Library in Firefox before 54 in graphite2::Silf::readGraphite...
9.1CVSS
9.4AI Score
0.005EPSS
8.1CVSS
9AI Score
0.003EPSS
Heap-based Buffer Overflow write in Graphite2 library in Firefox before 54 in lz4::decompress...
8.8CVSS
9.4AI Score
0.003EPSS
Out-of-bounds read in Graphite2 Library in Firefox before 54 in graphite2::Pass::readPass...
8.1CVSS
8.9AI Score
0.003EPSS
Heap-based Buffer Overflow in Graphite2 library in Firefox before 54 in lz4::decompress...
8.8CVSS
9.3AI Score
0.003EPSS
When a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about which domain is registering the new protocol. This may result in the user approving a protocol handler that they otherwise would not have. This vulnerability affects Firefox <...
4.3CVSS
5.5AI Score
0.006EPSS
If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users. This vulnerability affects Firefox <...
5.3CVSS
6.1AI Score
0.008EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 63. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox <...
8.8CVSS
8AI Score
0.005EPSS
When the RSS Feed preview about:feeds page is framed within another page, it can be used in concert with scripted content for a clickjacking attack that confuses users into downloading and executing an executable file from a temporary directory. Note: This issue only affects Windows operating...
8.8CVSS
6.8AI Score
0.003EPSS
A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox <...
9.8CVSS
7.5AI Score
0.006EPSS
The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This manifests when sub-resources are loaded as part of "Save Page As..." functionality. For example, a malicious page could recover a visitor's Windows username and NTLM hash by including resources....
6.5CVSS
7.1AI Score
0.008EPSS
A same-origin policy violation allowing the theft of cross-origin URL entries when using a meta http-equiv="refresh" on a page to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects...
6.5CVSS
5.6AI Score
0.002EPSS
A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < ...
9.8CVSS
7.6AI Score
0.009EPSS
Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This...
6.5CVSS
6.6AI Score
0.003EPSS
A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox <...
9.8CVSS
7.4AI Score
0.009EPSS
WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions......
6.5CVSS
6.8AI Score
0.003EPSS
A buffer overflow occurs when drawing and validating elements with the ANGLE graphics library, used for WebGL content, when working with the VertexBuffer11 module. This results in a potentially exploitable crash. This vulnerability affects Firefox <...
9.8CVSS
7.3AI Score
0.009EPSS
Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following a '?' in the parsed string. This could lead to denial of service (DOS) attacks. This vulnerability affects Firefox <...
7.5CVSS
7.4AI Score
0.012EPSS
A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects...
6.5CVSS
7AI Score
0.002EPSS
In private browsing mode on Firefox for Android, favicons are cached in the cache/icons folder as they are in non-private mode. This allows information leakage of sites visited during private browsing sessions. Note: this issue only affects Firefox for Android. Desktop versions of Firefox are...
5.3CVSS
6.2AI Score
0.006EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 63 and Firefox ESR 60.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects...
9.8CVSS
8.3AI Score
0.005EPSS
By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox <...
6.5CVSS
7AI Score
0.005EPSS
By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox <...
7.5CVSS
7AI Score
0.016EPSS
A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This...
7.1CVSS
6.8AI Score
0.001EPSS
A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. Note: 64-bit builds are not...
7.5CVSS
7.4AI Score
0.009EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox ESR 60.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR <.....
8.8CVSS
8.4AI Score
0.01EPSS
During HTTP Live Stream playback on Firefox for Android, audio data can be accessed across origins in violation of security policies. Because the problem is in the underlying Android service, this issue is addressed by treating all HLS streams as cross-origin and opaque to access. Note: this issue....
8.8CVSS
8.1AI Score
0.009EPSS
When manipulating user events in nested loops while opening a document through script, it is possible to trigger a potentially exploitable crash due to poor event handling. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird <...
9.8CVSS
7.2AI Score
0.004EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 62 and Firefox ESR 60.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects...
9.8CVSS
8.3AI Score
0.011EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 62. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox <...
8.8CVSS
9.4AI Score
0.007EPSS
A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR < 60.3 and Firefox...
6.5CVSS
7.2AI Score
0.032EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Uninitialized data for socket address leads to information...
5.5CVSS
5.2AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Absence of length sanity check may lead to possible stack overflow resulting in memory corruption in trustzone...
7.8CVSS
7.8AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Use-after-free issue in heap while loading audio effects config in audio effects...
7.8CVSS
5.9AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Out of bound mask range access caused by using possible old value of msg mask table count while copying masks to...
7.8CVSS
7.4AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Heap memory was accessed after it was...
7.8CVSS
5.9AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Null pointer dereference vulnerability may occur due to missing NULL assignment in NAT module of freed...
7.8CVSS
5.8AI Score
0.0004EPSS
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Users with no extra privileges can potentially access leaked data due to uninitialized padding present in display...
5.5CVSS
5.4AI Score
0.0004EPSS
When proxy auto-detection is enabled, if a web server serves a Proxy Auto-Configuration (PAC) file or if a PAC file is loaded locally, this PAC file can specify that requests to the localhost are to be sent through the proxy to another server. This behavior is disallowed by default when a proxy is....
5.9CVSS
6.9AI Score
0.003EPSS
Mozilla developers and community members reported memory safety bugs present in Firefox 64 and Firefox ESR 60.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects...
9.8CVSS
8AI Score
0.013EPSS
A crash and out-of-bounds read can occur when the buffer of a texture client is freed while it is still in use during graphic operations. This results is a potentially exploitable crash and the possibility of reading from the memory of the freed buffers. This vulnerability affects Firefox <...
9.8CVSS
5.3AI Score
0.006EPSS