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firefox

Vendor: Mozilla • 3,269 CVEs

CVEs (3,269)

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1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
5.3 MEDIUM· v3
N/A· v2
CSP violations generated links in the console tab of the developer tools, pointing to the violating resource. This caused a DNS prefetch which leaked that a CSP violation happened. This vulnerability affects Firefox < 12...Show more
CSP violations generated links in the console tab of the developer tools, pointing to the violating resource. This caused a DNS prefetch which leaked that a CSP violation happened. This vulnerability affects Firefox < 128 and Thunderbird < 128.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
4.3 MEDIUM· v3
N/A· v2
Form validation popups could capture escape key presses. Therefore, spamming form validation messages could be used to prevent users from exiting full-screen mode. This vulnerability affects Firefox < 128 and Thunderbird...Show more
Form validation popups could capture escape key presses. Therefore, spamming form validation messages could be used to prevent users from exiting full-screen mode. This vulnerability affects Firefox < 128 and Thunderbird < 128.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
8.8 HIGH· v3
N/A· v2
When almost out-of-memory an elliptic curve key which was never allocated could have been freed again. This vulnerability affects Firefox < 128 and Thunderbird < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
4.3 MEDIUM· v3
N/A· v2
It was possible to move the cursor using pointerlock from an iframe. This allowed moving the cursor outside of the viewport and the Firefox window. This vulnerability affects Firefox < 128 and Thunderbird < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
8.8 HIGH· v3
N/A· v2
It was possible to prevent a user from exiting pointerlock when pressing escape and to overlay customValidity notifications from a `&lt;select&gt;` element over certain permission prompts. This could be used to confuse a...Show more
It was possible to prevent a user from exiting pointerlock when pressing escape and to overlay customValidity notifications from a `&lt;select&gt;` element over certain permission prompts. This could be used to confuse a user into giving a site unintended permissions. This vulnerability affects Firefox < 128 and Thunderbird < 128.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
8.2 HIGH· v3
N/A· v2
Clipboard code failed to check the index on an array access. This could have led to an out-of-bounds read. This vulnerability affects Firefox < 128 and Thunderbird < 128.
1Mozilla
1Firefox
Jun 17, 2026
Jul 9, 2024
N/A· v4
8.8 HIGH· v3
N/A· v2
Firefox Android allowed immediate interaction with permission prompts. This could be used for tapjacking. This vulnerability affects Firefox < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 127, Firefox ESR 115.12, and Thunderbird 115.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploite...Show more
Memory safety bugs present in Firefox 127, Firefox ESR 115.12, and Thunderbird 115.12. 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 < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
7.4 HIGH· v3
N/A· v2
In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird <...Show more
In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A mismatch between allocator and deallocator could have led to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
4.7 MEDIUM· v3
N/A· v2
A race condition could lead to a cross-origin container obtaining permissions of the top-level origin. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jul 9, 2024
N/A· v4
6.3 MEDIUM· v3
N/A· v2
Due to large allocation checks in Angle for GLSL shaders being too lenient an out-of-bounds access could occur when allocating more than 8192 ints in private shader memory on macOS. This vulnerability affects Firefox < 1...Show more
Due to large allocation checks in Angle for GLSL shaders being too lenient an out-of-bounds access could occur when allocating more than 8192 ints in private shader memory on macOS. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.Show less
1Mozilla
2Firefox
Firefox Mobile
Aug 19, 2026
Jun 13, 2024
N/A· v4
4.3 MEDIUM· v3
N/A· v2
In certain scenarios a malicious website could attempt to display a fake location URL bar which could mislead users as to the actual website address This vulnerability affects Firefox for iOS < 127.
1Mozilla
2Firefox
Firefox Mobile
Aug 19, 2026
Jun 13, 2024
N/A· v4
6.5 MEDIUM· v3
N/A· v2
When browsing private tabs, some data related to location history or webpage thumbnails could be persisted incorrectly within the sandboxed app bundle after app termination This vulnerability affects Firefox for iOS < 12...Show more
When browsing private tabs, some data related to location history or webpage thumbnails could be persisted incorrectly within the sandboxed app bundle after app termination This vulnerability affects Firefox for iOS < 127.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jun 11, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
Memory corruption in the networking stack could have led to a potentially exploitable crash. This vulnerability affects Firefox < 125, Firefox ESR < 115.12, and Thunderbird < 115.12.
1Mozilla
1Firefox
Jun 17, 2026
Jun 11, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox 126. 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...Show more
Memory safety bugs present in Firefox 126. 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 < 127.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jun 11, 2024
N/A· v4
7.0 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploite...Show more
Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. 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 < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.Show less
1Mozilla
1Firefox
Jun 17, 2026
Jun 11, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the brow...Show more
In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the browser not correctly honoring the behaviors specified by the prefix. This vulnerability affects Firefox < 127.Show less
1Mozilla
1Firefox
Jun 17, 2026
Jun 11, 2024
N/A· v4
6.1 MEDIUM· v3
N/A· v2
By manipulating the fullscreen feature while opening a data-list, an attacker could have overlaid a text box over the address bar. This could have led to user confusion and possible spoofing attacks. This vulnerability a...Show more
By manipulating the fullscreen feature while opening a data-list, an attacker could have overlaid a text box over the address bar. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 127.Show less