CVE-2021-38497

Through use of reportValidity and window.open, a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox 93, Thunderbird 91.2, and Firefox ESR 91.2...

CVE-2020-16048

Out of bounds read in ANGLE allowed a remote attacker to obtain sensitive data via a crafted HTML page...

CVE-2021-29981

An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox 91 and Thunderbird 91...

CVE-2021-29990

Mozilla developers and community members reported memory safety bugs present in Firefox 90. 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 91...

CVE-2021-29962

Firefox for Android would become unstable and hard-to-recover when a website opened too many popups. This bug only affects Firefox for Android. Other operating systems are unaffected.. This vulnerability affects Firefox 89...

CVE-2021-29961

When styling and rendering an oversized element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox 89...

CVE-2021-29947

Mozilla developers and community members reported memory safety bugs present in Firefox 87. 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 88...

CVE-2021-23987

Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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...

CVE-2021-23983

By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could have been applied, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox 87...

CVE-2021-23982

Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR 78.9, Firefox 87, and Thunderbird 78.9...

CVE-2021-23959

An XSS bug in internal error pages could have led to various spoofing attacks, including other error pages and the address bar. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox 85...

CVE-2021-23970

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox 86...

CVE-2021-23974

The DOMParser API did not properly process '' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox 86...

CVE-2021-23975

The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects...

CVE-2021-23962

Incorrect use of the '' method could have led to a user-after-poison and a potentially exploitable crash. This vulnerability affects Firefox 85...

CVE-2021-23961

Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox 85...

CVE-2021-23965

Mozilla developers reported memory safety bugs present in Firefox 84. 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 85...

CVE-2021-23955

The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox 85...

CVE-2020-26971

Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers. This vulnerability affects Firefox 84, Thunderbird 78.6, and Firefox ESR 78.6...

CVE-2020-26973

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox 84, Thunderbird 78.6, and Firefox ESR 78.6...