CVE-2021-29976

CVE-2021-29976 is a memory-safety issue affecting Mozilla code shared by Firefox and Thunderbird. The advisory details indicate memory-safety bugs that could be exploited to run arbitrary code, impacting Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox

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-2024-10466

CVE-2024-10466: A specially crafted push message can hang the parent process, making the browser unresponsive. Affected: Firefox < 132, Firefox ESR < 128.4, Thunderbird

CVE-2024-7520

CVE-2024-7520 is a type confusion vulnerability in WebAssembly that could enable code execution. The available documents confirm impact on Mozilla Firefox (pre-129 and ESR pre-128.1) and Mozilla Thunderbird (pre-128.1). The underlying issue is a WebAssembly type confusion, with several advisories...

CVE-2025-0238

Mozilla Firefox and Thunderbird are affected by a use-after-free vulnerability triggered by a controlled failed memory allocation when breaking lines in text. This flaw could lead to a potentially exploitable crash or service interruption via a specially crafted web page. The vulnerability impact...

CVE-2019-9813

CVE-2019-9813 describes an IonMonkey JIT type confusion caused by incorrect handling of proto mutations, enabling potential arbitrary memory read/write. Affected products include Firefox prior to 66.0.1, Firefox ESR prior to 60.6.1, and Thunderbird prior to 60.6.1. The underlying issue is a type-...

CVE-2023-23601

CVE-2023-23601 is a browser navigation/vulnerability caused by dragging a URL from a cross-origin iframe into the same tab, enabling potential spoofing. Public records confirm impact on Firefox (less than 109) and Firefox ESR (less than 102.7) and Thunderbird (less than 102.7). Multiple advisorie...

CVE-2024-9396

A memory corruption vulnerability exists in Firefox and Thunderbird due to a condition where the structured clone of certain objects occurs. This vulnerability affects Firefox < 131 , Firefox ESR < 128.3 , Thunderbird < 128.3 , and Thunderbird

CVE-2025-0243

Mozilla Firefox and Thunderbird are affected by memory safety bugs in versions 133 and 128.5 (ESR). The root cause involves copying buffers without checking the size of the input data , which may lead to memory corruption . A remote attacker could potentially exploit these flaws to execute arbitr...

CVE-2020-26960

CVE-2020-26960 is a use-after-free vulnerability caused by reallocation during Compact() on nsTArray, affecting Firefox <83, Firefox ESR <78.5, and Thunderbird

CVE-2024-11705

The NSC_DeriveKey function in Firefox and Thunderbird (versions prior to 133) contains a NULL pointer dereference vulnerability. The function incorrectly assumes that the phKey parameter is always non-NULL; however, when passed as NULL, it triggers a segmentation fault (SEGV) , leading to applica...

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-2024-9397

CVE-2024-9397 is a concrete issue: a missing delay in the directory upload UI could enable clickjacking to trick users into granting permissions. Affected products include Firefox (versions prior to 131 and ESR prior to 128.3) and Thunderbird (prior to 131/128.3). Connected advisories (ALSA/ALAS)...

CVE-2019-17011

CVE-2019-17011 : A race condition in DocShell antitracking can cause a use-after-free and potentially crash the process. Affected: Thunderbird < 68.3, Firefox ESR < 68.3, Firefox

CVE-2024-10463

CVE-2024-10463 identifies a vulnerability where video frames could have been leaked between origins in certain situations. This flaw affects Firefox versions < 132, Firefox ESR < 128.4 (and < 115.17), Thunderbird < 128.4, and Thunderbird

CVE-2024-10467

Mozilla products including Firefox , Firefox ESR , and Thunderbird are affected by memory safety bugs including out-of-bounds write , out-of-bounds read , and buffer copy without checking size (CWE-787, CWE-125, CWE-120). The vulnerability impacts Firefox < 132 , Firefox ESR < 128.4 , Thund...

CVE-2024-6613

The frame iterator in Firefox and Thunderbird can become stuck in a loop when processing certain WebAssembly (WASM) frames. This flaw leads to the generation of incorrect stack traces . This vulnerability affects Firefox < 128 and Thunderbird

CVE-2019-11746

CVE-2019-11746 is a use-after-free in video element handling that can cause a crash. Public sources in connected advisories confirm impact on Firefox versions below 69, Thunderbird <68.1 and <60.9 (and ESR branches

CVE-2024-10465

This vulnerability affects Firefox (versions < 132), Firefox ESR (versions < 128.4), Thunderbird (versions < 128.4 and

CVE-2024-9402

Mozilla products, specifically Firefox , Firefox ESR , and Thunderbird , are impacted by memory safety bugs (CWE-119). These vulnerabilities affect versions of Firefox prior to 131, Firefox ESR prior to 128.3, and Thunderbird prior to 128.3 or 131. The flaws may lead to memory corruption , which ...

CVE-2019-11712

CVE-2019-11712 describes a vulnerability where NPAPI plugins (e.g., Flash) performing POST requests that follow a 308 redirect can bypass CORS, enabling CSRF. Affected products include Mozilla Firefox ESR < 60.8, Firefox < 68, and Thunderbird

CVE-2019-11717

CVE-2019-11717 affects Firefox ESR <60.8, Firefox <68, and Thunderbird

CVE-2019-11742

CVE-2019-11742 describes a same-origin policy violation enabling theft of cross-origin images via a combination of SVG filters and a element, due to an error in how cached image content is treated. Affected: Firefox versions before 69, Thunderbird before 68.1 (and before 60.9 for ESR branches), ...

CVE-2019-9795

CVE-2019-9795 describes a vulnerability in the IonMonkey JIT compiler where a type-confusion could be exploited by malicious JavaScript to trigger a crash. Public references indicate affected products include Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox

CVE-2019-9800

CVE-2019-9800 is supported by multiple connected advisories indicating memory safety bugs in Mozilla products (Thunderbird 60.x, Firefox ESR 60.x, Firefox 66–67 range) that could allow arbitrary code execution. The root cause is memory safety issues leading to memory corruption; affected versions...

CVE-2020-12417

CVE-2020-12417 is a memory-corruption issue in Firefox/Thunderbird affecting ARM64 JavaScript ValueTags, permitting a cross-boundary pass for ARM64 objects. Affected: Firefox ESR < 68.10, Firefox < 78, and Thunderbird

CVE-2024-11700

The SpiderMonkey JavaScript and WebAssembly engine, used in products like Firefox and Thunderbird , is susceptible to tapjacking via malicious websites. This flaw allows attackers to perform user intent confirmation , potentially tricking users into unknowingly approving the launch of external ap...

CVE-2020-12392

CVE-2020-12392 is a local vulnerability in Mozilla products where the “Copy as cURL” feature in DevTools network tab could improperly escape HTTP POST data, enabling potential arbitrary local file disclosure when the generated curl command is pasted and run. Affected are Firefox ESR < 68.8, Fi...

CVE-2020-6792

CVE-2020-6792 affects Mozilla Thunderbird prior to 68.5. When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents, a memory-safety issue. The vulnerability is listed against Thunderbird

CVE-2020-6797

CVE-2020-6797 describes a macOS-specific issue where downloading a file with the .fileloc extension could cause a semi-privileged extension to launch an arbitrary application on the user’s Mac. The attacker is constrained by the ability to download only quarantined files and cannot pass command-l...

CVE-2024-6612

This vulnerability affects Firefox < 128 and Thunderbird

CVE-2024-7522

The editor component in Mozilla products is vulnerable to an out-of-bounds read because the code failed to properly validate an attribute value. This vulnerability affects Firefox versions < 129, Firefox ESR < 115.14 and < 128.1, Thunderbird < 128.1, and Thunderbird

CVE-2024-9399

CVE-2024-9399 describes a denial-of-service in Firefox/Thunderbird caused by a website initiating a specially crafted WebTransport session that crashes the browser. Affected versions: Firefox before 131 and Firefox ESR before 128.3; Thunderbird before 128.3; Thunderbird before 131. The issue is t...

CVE-2020-6794

CVE-2020-6794 (Thunderbird) : The vulnerability occurs when a user who saved passwords before Thunderbird 60 later sets a master password; an unencrypted copy of those passwords remains accessible because the legacy password file isn’t deleted during data migration to the new format introduced in...

CVE-2021-23995

CVE-2021-23995 is a use-after-free vulnerability in Responsive Design Mode that could allow arbitrary code execution. Affected products: Firefox ESR <78.10, Thunderbird <78.10, and Firefox

CVE-2021-38496

CVE-2021-38496 describes a memory-safety issue: during MessageTask operations, a scheduled task could be removed, causing memory corruption and a potentially exploitable crash. Affected products include Thunderbird versions older than 78.15 and 91.2, Firefox ESR older than 91.2 and 78.15, and Fir...

CVE-2024-10468

Potential race conditions in IndexedDB could lead to memory corruption , resulting in a potentially exploitable crash. This vulnerability affects Firefox versions earlier than 132 and Thunderbird versions earlier than 132 . No specific exploitation details or remediation steps are provided in the...

CVE-2019-17008

CVE-2019-17008 describes a use-after-free vulnerability that can occur during the destruction of nested workers, leading to a potentially exploitable crash. Affected products include Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox

CVE-2024-11695

A flaw in Mozilla software allows a crafted URL containing Arabic script and whitespace characters to hide the true origin of a page, potentially enabling a spoofing attack . This vulnerability affects Firefox versions < 133, Firefox ESR < 128.5, Thunderbird versions < 133, and Thunderbird

CVE-2024-6608

The CVE-2024-6608 issue affects Mozilla Firefox (and related Thunderbird components) where pointerlock can move the cursor from within an iframe to outside the viewport and even outside the Firefox window. Affected versions are Firefox < 128 and Thunderbird

CVE-2020-6812

CVE-2020-6812: Affected software includes Thunderbird

CVE-2021-23987

CVE-2021-23987 corresponds to memory safety bugs reported in Mozilla Firefox (including Firefox ESR 78.8 branch) that could allow memory corruption and potentially arbitrary code execution. The CVE is stated to affect Firefox ESR < 78.9, Firefox < 87, and Thunderbird

CVE-2021-43539

CVE-2021-43539 is a Mozilla Firefox/Thunderbird memory safety issue: GC rooting failure when calling wasm instance methods can cause a use-after-free and potentially exploitable crash. Connected sources confirm the flaw affects Firefox up to 95 and Thunderbird up to 91.4.0, linked advisories show...

CVE-2023-23603

CVE-2023-23603 describes that Regular expressions used to filter forbidden properties/values from style directives in calls to console.log did not account for external URLs, enabling potential data exfiltration from the browser. Affected: Firefox <= 108/109 and Firefox ESR <= 102.7, Thunder...

CVE-2024-11708

Missing thread synchronization primitives could lead to a data race on members of the PlaybackParams structure. This vulnerability affects Firefox < 133 and Thunderbird

CVE-2024-7529

The date picker in Firefox and Thunderbird can partially obscure security prompts. This vulnerability allows a malicious site to trick users into granting unauthorized permissions. Affected versions include Firefox < 129 , Firefox ESR < 115.14 and < 128.1 , Thunderbird < 128.1 , and T...

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-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-2020-12395

CVE-2020-12395 refers to memory-safety bugs reported in Mozilla Firefox and Thunderbird. Mozilla noted memory corruption in bugs affecting Firefox 75/ESR 68.7 and stated that with enough effort some bugs could be exploited to run arbitrary code. The vulnerability impacts Firefox ESR < 68.8, Fi...

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...