CVE-2021-38509

CVE-2021-38509 describes an issue where, due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary contents could be displayed over an attacker’s chosen page. Affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR

CVE-2021-43538

CVE-2021-43538 is a race condition in the notification code that could allow spoofing by hiding fullscreen/pointer-lock notifications on affected Mozilla products. Affected: Thunderbird < 91.4.0, Firefox ESR < 91.4.0, Firefox

CVE-2024-10461

CVE-2024-10461: In multipart/x-mixed-replace responses, Content-Disposition: attachment header was not respected, enabling XSS. Affected: Firefox <132, Firefox ESR <128.4, Thunderbird <128.4, Thunderbird

CVE-2024-10462

A truncation vulnerability exists in the way long URLs are handled, which could allow for origin spoofing in a permission prompt. This issue affects Firefox versions < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird

CVE-2024-11701

The Firefox browser (versions < 133) and Thunderbird (versions

CVE-2024-11702

Copying sensitive information from Private Browsing tabs on Android, such as passwords, may inadvertently store data in the cloud-based clipboard history if enabled. This vulnerability affects Firefox < 133 and Thunderbird

CVE-2024-7521

Incomplete WebAssembly exception handling in the Mozilla ecosystem could lead to a use-after-free vulnerability. This issue affects Firefox versions prior to 129, Firefox ESR versions prior to 115.14, 128.1, Thunderbird versions prior to 128.1, and Thunderbird versions prior to 115.14. While the ...

CVE-2024-9394

CVE-2024-9394 describes a cross-origin information disclosure in Mozilla Firefox/Thunderbird via specially crafted multipart responses that can execute JavaScript under resource://devtools. Desktop Site Isolation limits cross-origin access, but Android versions may enable full cross-origin access...

CVE-2018-18500

CVE-2018-18500 is a use-after-free in the HTML5 stream parser when handling custom HTML elements, causing the parser object to be freed while still in use. Affected products include Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox

CVE-2019-9819

The CVE-2019-9819 issue is a JavaScript compartment mismatch involving the fetch API that can cause a crash. Affected products include Thunderbird (and Firefox components) with versions below 60.7 for Thunderbird and below 67 for Firefox/Firefox ESR; impact is described as potentially exploitable...

CVE-2025-0241

A memory corruption vulnerability exists in Mozilla Firefox and Thunderbird during the segmentation of specially crafted text. This flaw can lead to a potentially exploitable crash or service interruption due to data being transferred beyond the buffer in memory. The issue affects versions of Fir...

CVE-2019-11711

CVE-2019-11711 involves reuse of an inner window that neglects document.domain cross-origin protections, enabling script injection across subdomains. Affected software per connected docs: Firefox ESR < 60.8, Firefox < 68, and Thunderbird

CVE-2020-6822

CVE-2020-6822 is an out-of-bounds write in GMPDecodeData when processing images larger than 4 GB on 32-bit builds, potentially allowing arbitrary code execution. Affected products include Thunderbird and Firefox (Thunderbird < 68.7.0, Firefox ESR < 68.7, Firefox

CVE-2021-23978

CVE-2021-23978 affects Mozilla products (Firefox and Thunderbird/Firefox ESR). The connected documents confirm memory safety bugs in Firefox 85 and ESR 78.7, with potential memory corruption that could lead to arbitrary code execution. Impact is described for Firefox < 86, Thunderbird < 78....

CVE-2024-11697

A vulnerability in Firefox and Thunderbird allows an attacker to trick a user into bypassing the "Open Executable File?" confirmation dialog by manipulating how keypress events are handled. This flaw could lead to malicious code execution . Affected versions include Firefox < 133 , Firefox ESR...

CVE-2019-17005

The CVE-2019-17005 issue is a memory safety vulnerability in Mozilla’s plain text serializer where a fixed-size array for the number of elements could overflow, causing memory corruption and a potentially exploitable crash. Affected products include Thunderbird, Firefox ESR, and Firefox (all ver...

CVE-2019-9811

CVE-2019-9811 corresponds to a sandbox-escape vulnerability demonstrated in a Pwn2Own entry. The issue affects Mozilla products: Firefox ESR before 60.8, Firefox before 68, and Thunderbird before 60.8, with a malicious language-pack installation used to compromise the translation feature to escap...

CVE-2024-7525

A missing permission check when creating a StreamFilter allows a web extension with minimal permissions to read and modify the response body of requests on any site. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird

CVE-2019-17012

Mozilla reported memory safety bugs in Firefox 70 and Firefox ESR 68.2, with potential to exploit for arbitrary code. Affected: Thunderbird < 68.3, Firefox ESR < 68.3, Firefox

CVE-2018-18492

CVE-2018-18492 is a use-after-free in the Firefox/ Thunderbird codebase: after deleting a selection element, a weak reference in the options collection can lead to a potentially exploitable crash. Affected products include Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox

CVE-2021-23960

CVE-2021-23960 is corroborated by connected documents: a memory-safety issue in Firefox/Thunderbird where garbage collection on re-declared JavaScript variables can cause a use-after-poison and potentially crash the process. Affected versions are Firefox < 85, Thunderbird < 78.7, and Firefo...

CVE-2023-23602

CVE-2023-23602 describes a mishandled security check when creating a WebSocket in a WebWorker, causing the Content Security Policy connect-src header to be ignored. Affected products in the provided sources include Firefox (versions before 109), Firefox ESR (before 102.7), and Thunderbird (before...

CVE-2020-15656

CVE-2020-15656 involves a type confusion for special arguments in IonMonkey affecting Firefox ESR <78.1, Firefox <79, and Thunderbird

CVE-2020-26971

CVE-2020-26971 describes a heap buffer overflow caused by unconstained blit values in user input, affecting Mozilla Firefox (unspecified versions), Thunderbird < 78.6 and Firefox ESR

CVE-2022-46872

CVE-2022-46872 describes an attacker who compromised a Thunderbird content process on Linux could partially escape the sandbox and read arbitrary files via clipboard-related IPC messages. Publicly cited texts indicate the vulnerability affects Firefox <108, Firefox ESR <102.6, and Thunderbird

CVE-2020-26968

CVE-2020-26968 is a Mozilla Firefox/Thunderbird memory-safety issue. The provided documents indicate memory-safety bugs in Firefox 82 and ESR 78.4, with potential memory corruption that could allow running arbitrary code. Affected versions: Firefox < 83, Firefox ESR < 78.5, and Thunderbird

CVE-2021-43541

CVE-2021-43541 is a vulnerability in how external protocol handler URLs are processed. In affected products (Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox

CVE-2021-29964

CVE-2021-29964 is a local, Windows-only vulnerability in Mozilla Firefox where a hostile WM_COPYDATA message could cause an out-of-bounds read while parsing the message. Affected products include Thunderbird < 78.11, Firefox < 89, and Firefox ESR

CVE-2021-43543

CVE-2021-43543 is a CSP sandbox bypass where documents loaded with the CSP sandbox directive could escape restrictions by embedding additional content. Affected products include Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox

CVE-2018-18501

CVE-2018-18501 corresponds to multiple memory-safety issues in Mozilla products, affecting Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox

CVE-2020-26958

The CVE-2020-26958 issue is a MIME-type handling flaw: Firefox did not block script execution when responses with incorrect MIME types were intercepted and cached via a ServiceWorker, enabling a cross-site script inclusion or CSP bypass. Affected products are Firefox (non-ESR) < 83, Firefox ES...

CVE-2021-38500

CVE-2021-38500 corresponds to memory-safety bugs in Firefox 92/ESR 91.1–93 and affects Thunderbird and Firefox ESR up to certain versions (Thunderbird <78.15, <91.2; Firefox ESR <91.2, <78.15; Firefox

CVE-2023-5169

CVE-2023-5169 (Firefox/Thunderbird) involves a compromised content process that could feed malicious data into PathRecording, causing an out-of-bounds write and potentially a crash in a privileged process. Affected products include Firefox <118, Firefox ESR <115.3, and Thunderbird

CVE-2019-11764

CVE-2019-11764 refers to memory safety bugs in Mozilla Firefox (including ESR) and Thunderbird. The issues show evidence of memory corruption and, with sufficient effort, could be exploited to run arbitrary code. Affected products/versions (as stated): Firefox versions before 70, Thunderbird befo...

CVE-2020-12405

The CVE-2020-12405 issue is a race condition in Thunderbird/Firefox SharedWorkerService that could cause a crash. It affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR

CVE-2020-26959

CVE-2020-26959 is a use-after-free in the WebRequestService during browser shutdown, potentially enabling memory corruption and a crash in Firefox/Thunderbird prior to the fixed versions. Connected advisories confirm this affects Firefox <83, Firefox ESR <78.5, and Thunderbird

CVE-2023-5176

CVE-2023-5176 concerns memory safety bugs in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2, with affected range Firefox <118, ESR <115.3, and Thunderbird

CVE-2018-18493

CVE-2018-18493 describes a buffer overflow in the Skia library used for hardware-accelerated 2D canvas, caused by 32-bit offset calculations where 64-bit calculations were needed. Affected products include Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox

CVE-2020-15673

CVE-2020-15673 refers to memory-safety bugs reported in Mozilla Firefox (including ESR) and Thunderbird. Affected products and versions include Firefox <81, Firefox ESR <78.3, and Thunderbird

CVE-2020-6807

CVE-2020-6807 describes a use-after-free in Thunderbird involving stream-reinit when a device/stream is modified as it is being destroyed. Affected products include Thunderbird

CVE-2021-43536

CVE-2021-43536: The connected advisories confirm an information-disclosure/URL leakage flaw triggered when navigating asynchronously in Firefox/Thunderbird prior to fixed releases. Affected: Thunderbird < 91.4.0, Firefox ESR < 91.4.0, Firefox

CVE-2021-43545

CVE-2021-43545: Denial of Service via the Location API loop in Firefox/Thunderbird. Affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox

CVE-2019-11762

The CVE-2019-11762 issue is a cross-origin origin isolation bug where two same-origin documents setting document.domain differently could allow calling arbitrary DOM methods/getters/setters on the now-cross-origin window. Affected products include Firefox (<70) and Firefox ESR (<68.2), and ...

CVE-2020-15652

CVE-2020-15652 : The issue is a leak of the result of a cross-origin redirect observed from stack traces of JavaScript errors in web workers. Affected products include Firefox (and ESR branches) and Thunderbird before version 79/68.11–78.1 depending on branch. The root cause is described as a mem...

CVE-2020-15659

CVE-2020-15659 concerns memory safety bugs in Firefox 78 and Firefox ESR 78.x, with potential to run arbitrary code. The entry affects Firefox < 79 and Firefox ESR < 68.11/78.1, and Thunderbird

CVE-2020-26951

CVE-2020-26951 involves a parsing and event loading mismatch in Firefox’s SVG code that could allow load events to fire after sanitization, potentially bypassing a built-in sanitizer. Affected products include Firefox < 83, Firefox ESR < 78.5, and Thunderbird

CVE-2019-11761

CVE-2019-11761 affects Thunderbird (and Firefox/Firefox ESR) via an unintended access to a privileged JSONView object that has been cloned into content. The root cause is exposure of this object through a form using a data: URI, enabling access to privileged content and bypassing defense-in-depth...

CVE-2023-5171

CVE-2023-5171 describes a use-after-free in the Ion compiler’s garbage collection that could allow memory corruption and a potentially exploitable crash, by allowing an attacker to write two NUL bytes. Affected products include Firefox and Thunderbird: Firefox ≤ 117.x (with ESR ≤ 115.3) prior to ...

CVE-2020-26961

CVE-2020-26961 describes a DoH-related issue where IPv4 addresses mapped through IPv6 bypass RFC1918 filtering, enabling a DNS rebinding-like condition in Firefox/Thunderbird before versions 83/78.5. Connected sources (CentOS advisories) confirm Mozilla patches addressing multiple issues includin...

CVE-2021-43542

CVE-2021-43542 is a information-disclosure vulnerability involving XMLHttpRequest: error messages could reveal the existence of an external protocol handler, enabling an attacker to identify installed applications. Connected sources indicate the issue affects Thunderbird < 91.4.0, Firefox ESR ...