Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3726 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-25731 1 Mozilla 1 Firefox 2026-06-17 N/A 8.8 HIGH
Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters could potentially be used to overwrite global objects in privileged code. This vulnerability affects Firefox < 110.
CVE-2023-25730 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 5.4 MEDIUM
A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-25729 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-25728 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
The <code>Content-Security-Policy-Report-Only</code> header could allow an attacker to leak a child iframe's unredacted URI when interaction with that iframe triggers a redirect. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-23606 1 Mozilla 1 Firefox 2026-06-17 N/A 8.8 HIGH
Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108. 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.
CVE-2023-23605 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
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.
CVE-2023-23604 1 Mozilla 1 Firefox 2026-06-17 N/A 6.5 MEDIUM
A duplicate `SystemPrincipal` object could be created when parsing a non-system html document via `DOMParser::ParseFromSafeString`. This could have lead to bypassing web security checks. This vulnerability affects Firefox < 109.
CVE-2023-23603 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
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.
CVE-2023-23602 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
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.
CVE-2023-23601 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
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.
CVE-2023-23600 1 Mozilla 1 Firefox 2026-06-17 N/A 6.5 MEDIUM
Per origin notification permissions were being stored in a way that didn't take into account what browsing context the permission was granted in. This lead to the possibility of notifications to be displayed during different browsing sessions. *This bug only affects Firefox for Android. Other operating systems are unaffected.* This vulnerability affects Firefox < 109.
CVE-2023-23599 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
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.
CVE-2023-23598 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
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.
CVE-2023-23597 1 Mozilla 1 Firefox 2026-06-17 N/A 6.5 MEDIUM
A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the `file://` context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read. This vulnerability affects Firefox < 109.
CVE-2023-1945 1 Mozilla 2 Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 102.10 and Firefox ESR < 102.10.
CVE-2023-1521 1 Mozilla 1 Sccache 2026-06-17 N/A 7.8 HIGH
On Linux the sccache client can execute arbitrary code with the privileges of a local sccache server, by preloading the code in a shared library passed to LD_PRELOAD. If the server is run as root (which is the default when installing the snap package https://snapcraft.io/sccache ), this means a user running the sccache client can get root privileges.
CVE-2023-0767 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
CVE-2023-0616 1 Mozilla 1 Thunderbird 2026-06-17 N/A 6.5 MEDIUM
If a MIME email combines OpenPGP and OpenPGP MIME data in a certain way Thunderbird repeatedly attempts to process and display the message, which could cause Thunderbird's user interface to lock up and no longer respond to the user's actions. An attacker could send a crafted message with this structure to attempt a DoS attack. This vulnerability affects Thunderbird < 102.8.
CVE-2023-0547 1 Mozilla 1 Thunderbird 2026-06-17 N/A 6.5 MEDIUM
OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug. This vulnerability affects Thunderbird < 102.10.
CVE-2023-0430 1 Mozilla 1 Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Certificate OCSP revocation status was not checked when verifying S/Mime signatures. Mail signed with a revoked certificate would be displayed as having a valid signature. Thunderbird versions from 68 to 102.7.0 were affected by this bug. This vulnerability affects Thunderbird < 102.7.1.