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-2021-38507

CVE-2021-38507 describes a vulnerability in HTTP/2 Opportunistic Encryption (RFC 8164) where, if a second encrypted port on the same IP (e.g., 8443) did not opt in, a network attacker could forward 443 to 8443 and trick the browser into treating the content as same-origin with HTTP. The issue was...

CVE-2024-10468

CVE-2024-10468 describes potential race conditions in IndexedDB that could cause memory corruption, leading to a potentially exploitable crash. Affected products are Mozilla Firefox and Mozilla Thunderbird earlier than version 132. Multiple connected sources-confirm this same issue across distrib...

CVE-2024-11705

The CVE-2024-11705 issue is due to NSC_DeriveKey assuming phKey is non-NULL; passing NULL leads to a segmentation fault (crash). Affected products reported across sources include Firefox and Thunderbird prior to version 133. The vulnerability description and linked advisories indicate this NULL d...

CVE-2024-9396

The CVE-2024-9396 issue is a memory safety concern arising from cloning certain objects via the structured clone algorithm, potentially causing memory corruption. Affected products include Firefox (versions earlier than 131), Firefox ESR (earlier than 128.3), Thunderbird (earlier than 128.3), and...

CVE-2024-7521

CVE-2024-7521 is a Firefox/Thunderbird vulnerability caused by incomplete WebAssembly exception handling that could lead to a use-after-free and memory corruption. Affected: Firefox <129, ESR <115.14, ESR <128.1, Thunderbird <128.1, Thunderbird

CVE-2024-9398

CVE-2024-9398 affects Mozilla Firefox and Thunderbird: an attacker could enumerate external protocol handlers by exploiting a check of window.open results, effectively testing whether a protocol handler is installed. Affected: Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and ...

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-2019-11698

CVE-2019-11698 concerns theft of browser history via drag-and-drop of crafted hyperlinks to bookmarks that are dragged into web content. Public documents confirm affected products and versions: Thunderbird < 60.7, Firefox < 67, and Firefox ESR

CVE-2020-6806

CVE-2020-6806 is a memory-safety bug causing an out-of-bounds read during promise resolution that could lead to memory corruption and a potentially exploitable crash. The vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox ESR < 68.6, and Firefox ESR

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-2021-24002

CVE-2021-24002 is a vulnerability observed in Firefox before 88 and Thunderbird before 78.10 where clicking an FTP URL containing encoded newline characters (%0A, %0D) could cause the server to interpret newlines and execute arbitrary commands. Affected products include Firefox ESR < 78.10, Fi...

CVE-2024-11708

The CVE-2024-11708 entry concerns Firefox and Thunderbird: a missing thread synchronization primitive could cause a data race in the PlaybackParams structure, affecting Firefox < 133 and Thunderbird

CVE-2024-7518

CVE-2024-7518 describes that select options could obscure the fullscreen notification dialog, enabling spoofing by a malicious site. Affected products and versions identified in connected docs include Mozilla Firefox (older builds: Firefox < 129 and Firefox ESR < 128.1) and Mozilla Thunderb...

CVE-2021-4140

CVE-2021-4140 is a vulnerability where crafted XSLT markup could bypass the iframe sandbox, affecting Mozilla Firefox/Thunderbird products. Connected advisories consistently describe an iframe sandbox bypass with XSLT as the issue (CVE-2021-4140) and document affected versions such as Firefox ESR...

CVE-2024-11700

The CVE-2024-11700 issue concerns Firefox and Thunderbird with versions earlier than 133, where tapjacking could let malicious sites synthesize user intent confirmations to launch external applications. This is described across multiple connected advisories (e.g., Gentoo GLSA references and Alpin...

CVE-2024-11702

CVE-2024-11702 concerns Mozilla Firefox and Mozilla Thunderbird information disclosure due to insufficient clipboard protection in Android Private Browsing mode. Affected products: Firefox and Thunderbird with versions prior to 133. Root cause: clipboard data (sensitive data such as passwords) co...

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-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-2024-11695

CVE-2024-11695 describes a spoofing vulnerability in Mozilla Firefox and Thunderbird where a crafted URL containing Arabic script and whitespace could hide the page’s true origin, enabling spoofing. Affected versions: Firefox < 133 and Firefox ESR < 128.5; Thunderbird < 133 and Thunderbird

CVE-2024-7529

CVE-2024-7529: The date picker can partially obscure security prompts in Mozilla Firefox and Thunderbird up to specific versions (Firefox < 129, ESR < 115.14/128.1; Thunderbird

CVE-2019-11693

CVE-2019-11693 describes a Linux-specific buffer overflow in WebGL’s bufferdata, affecting Thunderbird and Firefox (Thunderbird <60.7, Firefox <67, ESR

CVE-2020-12406

CVE-2020-12406 involves a missing type check during unboxed objects removal in Mozilla code, leading to a crash that could be exploited to run arbitrary code. Affected products/versions from the provided documents include Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR

CVE-2024-10462

CVE-2024-10462 describes a truncation of long URLs that could allow origin spoofing in a permission prompt for Mozilla Firefox and Thunderbird. The connected documents confirm affected products and versions: Firefox and Firefox ESR up to certain releases (Firefox < 132; ESR < 128.4), Thunde...

CVE-2024-11701

CVE-2024-11701 affects Mozilla Firefox and Mozilla Thunderbird. The issue is an incorrect domain being displayed in the address bar during interrupted navigation, which could enable spoofing attacks. Affected versions are Firefox < 133 and Thunderbird

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-2025-1019

CVE-2025-1019 affects Firefox and Thunderbird where the z-order of fullscreen notifications can be manipulated to hide the notification, enabling a potential spoofing attack. Affected versions are Firefox and Thunderbird prior to 135. The underlying issue is the fullscreen notification display or...

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-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-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-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-2020-15652

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-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-2024-11697

The CVE-2024-11697 entry concerns Mozilla Firefox and Thunderbird and involves improper handling of keypresses in the Executable File Confirmation dialog. Affected versions are Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, 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-2019-9817

CVE-2019-9817 describes cross-origin image access via canvas that can leak image data across domains. Publicly reported impact affects Mozilla products including Thunderbird and Firefox (non-ESR and ESR lines) prior to version thresholds: Thunderbird <60.7, Firefox <67, ESR

CVE-2021-38508

CVE-2021-38508 is a vulnerability affecting Mozilla products where a form validity message shown in the same location as a permission prompt (e.g., geolocation) can obscure the prompt, potentially tricking users into granting permissions. Affected: Firefox < 94, Thunderbird < 91.3, and Fire...

CVE-2025-0241

CVE-2025-0241 is a memory-corruption vulnerability in Mozilla Firefox/Thunderbird caused by faulty text segmentation. Affected products include Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird

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-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-2020-12405

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-2020-15673

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-2020-26951

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-2020-26956

CVE-2020-26956 is an XSS issue caused by removing HTML elements during sanitization, which could leave SVG event handlers active. Affected: Firefox <83, Firefox ESR <78.5, Thunderbird

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-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-2020-26961

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-2021-29969

Thunderbird is affected by CVE-2021-29969: when STARTTLS is used for IMAP, an attacker injecting IMAP responses before TLS completion could cause Thunderbird to display spoofed information (e.g., folders that don’t exist). Affects Thunderbird versions older than 78.12. The issue originates from n...

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