Total
490 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2019-11745 | 6 Canonical, Debian, Mozilla and 3 more | 23 Ubuntu Linux, Debian Linux, Firefox and 20 more | 2026-06-17 | 6.8 MEDIUM | 8.8 HIGH |
| When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71. | |||||
| CVE-2019-11743 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-06-17 | 4.3 MEDIUM | 3.7 LOW |
| Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1. | |||||
| CVE-2019-11742 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-06-17 | 4.3 MEDIUM | 6.5 MEDIUM |
| A same-origin policy violation occurs allowing the theft of cross-origin images through a combination of SVG filters and a <canvas> element due to an error in how same-origin policy is applied to cached image content. The resulting same-origin policy violation could allow for data theft. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1. | |||||
| CVE-2019-11740 | 3 Canonical, Mozilla, Opensuse | 5 Ubuntu Linux, Firefox, Firefox Esr and 2 more | 2026-06-17 | 6.8 MEDIUM | 8.8 HIGH |
| Mozilla developers and community members reported memory safety bugs present in Firefox 68, Firefox ESR 68, and Firefox 60.8. 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 < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1. | |||||
| CVE-2019-11738 | 2 Mozilla, Opensuse | 3 Firefox, Firefox Esr, Leap | 2026-06-17 | 6.8 MEDIUM | 6.3 MEDIUM |
| If a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1. | |||||
| CVE-2019-11736 | 2 Microsoft, Mozilla | 3 Windows, Firefox, Firefox Esr | 2026-06-17 | 4.4 MEDIUM | 7.0 HIGH |
| The Mozilla Maintenance Service does not guard against files being hardlinked to another file in the updates directory, allowing for the replacement of local files, including the Maintenance Service executable, which is run with privileged access. Additionally, there was a race condition during checks for junctions and symbolic links by the Maintenance Service, allowing for potential local file and directory manipulation to be undetected in some circumstances. This allows for potential privilege escalation by a user with unprivileged local access. <br>*Note: These attacks requires local system access and only affects Windows. Other operating systems are not affected.*. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1. | |||||
| CVE-2019-11735 | 2 Mozilla, Opensuse | 3 Firefox, Firefox Esr, Leap | 2026-06-17 | 6.8 MEDIUM | 8.8 HIGH |
| Mozilla developers and community members reported memory safety bugs present in Firefox 68 and Firefox ESR 68. 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 < 69 and Firefox ESR < 68.1. | |||||
| CVE-2019-11730 | 4 Debian, Mozilla, Opensuse and 1 more | 7 Debian Linux, Firefox, Firefox Esr and 4 more | 2026-06-17 | 4.3 MEDIUM | 6.5 MEDIUM |
| A vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other files in the same directory or sub-directories if the names are known or guessed. The Fetch API can then be used to read the contents of any files stored in these directories and they may uploaded to a server. It was demonstrated that in combination with a popular Android messaging app, if a malicious HTML attachment is sent to a user and they opened that attachment in Firefox, due to that app's predictable pattern for locally-saved file names, it is possible to read attachments the victim received from other correspondents. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8. | |||||
| CVE-2019-11691 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7. | |||||
| CVE-2018-5188 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| Memory safety bugs present in Firefox 60, Firefox ESR 60, and Firefox ESR 52.8. 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 Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61. | |||||
| CVE-2018-18501 | 4 Canonical, Debian, Mozilla and 1 more | 10 Ubuntu Linux, Debian Linux, Firefox and 7 more | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| 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 Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65. | |||||
| CVE-2018-18500 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65. | |||||
| CVE-2018-18499 | 1 Mozilla | 3 Firefox, Firefox Esr, Thunderbird | 2026-06-17 | 4.3 MEDIUM | 6.5 MEDIUM |
| 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 Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1. | |||||
| CVE-2018-18498 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| 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 < 64. | |||||
| CVE-2018-12396 | 4 Canonical, Debian, Mozilla and 1 more | 10 Ubuntu Linux, Debian Linux, Firefox and 7 more | 2026-06-17 | 4.3 MEDIUM | 6.5 MEDIUM |
| 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 < 63. | |||||
| CVE-2018-12395 | 4 Canonical, Debian, Mozilla and 1 more | 8 Ubuntu Linux, Debian Linux, Firefox and 5 more | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| 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 < 63. | |||||
| CVE-2018-12393 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| 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 vulnerable to this issue.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3. | |||||
| CVE-2018-12391 | 2 Google, Mozilla | 4 Android, Firefox, Firefox Esr and 1 more | 2026-06-17 | 9.3 HIGH | 8.8 HIGH |
| 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 only affects Firefox for Android. Desktop versions of Firefox are unaffected.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3. | |||||
| CVE-2018-12385 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 4.4 MEDIUM | 7.0 HIGH |
| A potentially exploitable crash in TransportSecurityInfo used for SSL can be triggered by data stored in the local cache in the user profile directory. This issue is only exploitable in combination with another vulnerability allowing an attacker to write data into the local cache or from locally installed malware. This issue also triggers a non-exploitable startup crash for users switching between the Nightly and Release versions of Firefox if the same profile is used. This vulnerability affects Thunderbird < 60.2.1, Firefox ESR < 60.2.1, and Firefox < 62.0.2. | |||||
| CVE-2018-12383 | 4 Canonical, Debian, Mozilla and 1 more | 11 Ubuntu Linux, Debian Linux, Firefox and 8 more | 2026-06-17 | 2.1 LOW | 5.5 MEDIUM |
| If a user saved passwords before Firefox 58 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Firefox 58. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Firefox < 62, Firefox ESR < 60.2.1, and Thunderbird < 60.2.1. | |||||