CVE-2025-1012

CVE-2025-1012 describes a race during concurrent delazification that can cause a use-after-free in Firefox and Thunderbird. Affected products include Firefox <135, Firefox ESR <115.20, Firefox ESR <128.7, Thunderbird <128.7, and Thunderbird

CVE-2019-11743

CVE-2019-11743 describes cross-origin access to unload event attributes, enabling timing-side-channel exposure of history in certain browsers. Connected docs confirm affected products and versions, with fixes noted in Thunderbird updates (e.g., Thunderbird 60.9.0) and Firefox/ESR advisories addre...

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-2021-23999

CVE-2021-23999 describes a sandbox/privilege issue where a Blob URL loaded via an unusual user interaction could be executed with System Principal privileges, affecting Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox

CVE-2023-6209

CVE-2023-6209 corresponds to a parsing vulnerability where relative URLs starting with three slashes and a "/../" path could override the specified host, potentially enabling security issues on affected sites. The issue is documented for Firefox and Thunderbird, with affected versions cited as Fi...

CVE-2024-4769

CVE-2024-4769 : In Firefox and Thunderbird, Web Workers handling could reveal cross-origin information by distinguishing between responses with the content-type application/javascript vs non-script types. This could lead to information disclosure across origins. Affected products are Firefox befo...

CVE-2025-0239

CVE-2025-0239 affects Mozilla Firefox and Thunderbird components via Alt-Svc with ALPN: certificates were not properly validated when the original server redirects to an insecure site. Affected versions are Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird

CVE-2019-9790

CVE-2019-9790 is a use-after-free vulnerability triggered when a raw pointer to a DOM element is obtained via JavaScript and the element is removed while still in use. 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-2021-23998

CVE-2021-23998 describes a content spoofing vulnerability in Firefox/Thunderbird: through complex navigation involving new windows, an HTTP page could inherit the lock icon from an HTTPS page. Affected products are Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox

CVE-2024-6607

CVE-2024-6607 affects Mozilla Firefox (pre-128) and Mozilla Thunderbird (pre-128). The issue allows a user flow disruption where a user can be prevented from exiting pointerlock by pressing Escape and can overlay customValidity notifications from a element over permission prompts, potentially co...

CVE-2024-6609

The CVE-2024-6609 entry concerns NSS memory management: when memory is nearly exhausted, an elliptic curve key that was never allocated could be freed again, potentially enabling memory corruption or related instability. Affected products cited in connected docs include Mozilla Firefox and Mozill...

CVE-2024-8382

The CVE-2024-8382 entry describes a vulnerability where privileged EventHandler interfaces were exposed to web content during execution of their listener callbacks. Affected software includes Firefox (less than 130; ESR <128.2 and ESR

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-2019-11746

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-2020-6829

CVE-2020-6829 is a vulnerability in NSS (Network Security Services) libraries (nss, nss-util, nss-softokn, nspr) where the wNAF scalar point multiplication during ECDSA signature generation leaks partial nonce information. This side-channel can enable an attacker with electromagnetic traces from ...

CVE-2024-11696

CVE-2024-11696 describes an Unhandled Exception in Add-on Signature Verification due to how loadManifestFromFile handles invalid/unsupported extension manifests, potentially bypassing enforcement of signature validation for unrelated Firefox/Thunderbird add-ons. Affected software and versions per...

CVE-2024-8384

CVE-2024-8384 describes a memory safety issue in the JavaScript engine’s garbage collector where cross-compartment objects could be mis-colored under certain OOM timing, leading to memory corruption. Affected products per connected sources include Firefox and Thunderbird up to specific versions: ...

CVE-2019-11733

CVE-2019-11733 affects Firefox before 68.0.2 (and ESR before 68.0.2). When a master password is set, stored passwords in the Saved Logins dialog could be copied to the clipboard via the copy password action without re-entering the master password in the same session, enabling potential theft of s...

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-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-2023-4579

CVE-2023-4579 affects Mozilla Firefox when the default search engine may render a well-formed URL from a query as the navigated URL, enabling potential spoofing. Connected advisories confirm the issue targets Firefox versions prior to 117 and involve the default search engine handling, across mul...

CVE-2024-11693

The CVE-2024-11693 issue is a Windows-only vulnerability in Mozilla Firefox/Thunderbird where the executable warning was not shown when downloading .library-ms files. Affected products and versions are Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird

CVE-2024-5693

Offscreen Canvas cross-origin tainting tracked incorrectly, enabling potential access to image data from other sites. Affected: Firefox <127, Firefox ESR <115.12, Thunderbird

CVE-2019-11692

CVE-2019-11692 is a use-after-free in the event listener manager that can occur when listeners are removed while still in use, causing a crash in Thunderbird <=60.6.x/60.7.0, Firefox <=66-67 (and ESR

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-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-2024-4777

CVE-2024-4777 concerns memory-safety bugs in Firefox 125, Firefox ESR 115.10, and Thunderbird 115.10, potentially allowing arbitrary code execution. Public sources in connected documents confirm affected products and versions: Firefox < 126, Firefox ESR < 115.11, and Thunderbird

CVE-2024-8385

CVE-2024-8385 is a WASM type confusion vulnerability caused by how StructFields and ArrayTypes are handled. Affects Firefox (versions before 130) and Firefox ESR (before 128.2) and Thunderbird (before 128.2). Exploitation could lead to high-impact outcomes per the CVE. Remediation in the public d...

CVE-2024-8387

CVE-2024-8387 affects Mozilla Firefox 129, Firefox ESR 128.1, and Thunderbird 128.1. It involves memory safety bugs that could allow memory corruption and, with sufficient effort, potentially arbitrary code execution. Impact is high (CVE scope covers Firefox <130, ESR <128.2, Thunderbird

CVE-2024-8383

CVE-2024-8383 affects Mozilla Firefox and Firefox ESR. The issue arises when Firefox asks the OS to handle a scheme the browser doesn’t support and doesn’t prompt for confirmation for Usenet-related schemes (news: and snews:). This could allow a malicious webpage or downloaded application to regi...

CVE-2025-1018

The CVE-2025-1018 entry concerns Firefox and Thunderbird before version 135, where the fullscreen notification is prematurely hidden when fullscreen is re-requested quickly by the user. The underlying issue can allow spoofing, with a resulting impact described as partial integrity/availability co...

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-2019-11742

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-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-2024-6610

The CVE-2024-6610 issue is disclosed across multiple sources as a UI vulnerability in Mozilla Firefox and Thunderbird prior to version 128, caused by form validation popups that can capture escape key presses and block exiting full-screen mode. Affected products: Firefox <128 and Thunderbird

CVE-2015-7575

CVE-2015-7575 affects NSS (used by Mozilla Firefox) where MD5 signatures in TLS 1.2 ServerKeyExchange are accepted, enabling potential MITM server impersonation. The published description notes NSS before 3.20.2 and Firefox before 43.0.2 / ESR 38.x before 38.5.2 are impacted. Debian/IBM/AIX advis...

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-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-2024-5695

CVE-2024-5695 describes an out-of-memory condition in Mozilla Firefox’s probabilistic heap checker allocations that could trigger an assertion and, in rarer cases, memory corruption. Affected software: Firefox versions older than 127. The root cause is tied to the probabilistic heap checker alloc...

CVE-2024-7527

The CVE-2024-7527 issue (use-after-free at the start of sweeping) affects Firefox <129 and Thunderbird

CVE-2025-0245

CVE-2025-0245 affects Firefox before version 134. The issue is that an opt-in authentication setting could be bypassed under certain circumstances, enabling local access without proper authentication and with user interaction required. Root cause details are not fully disclosed in the provided do...

CVE-2019-9816

Summary: CVE-2019-9816 is a type confusion vulnerability involving manipulation of JavaScript objects in object groups, affecting Mozilla products (Thunderbird and Firefox/Firefox ESR) and specifically related to UnboxedObjects, which are disabled by default on all supported releases. The issue i...

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-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-2024-10460

The CVE-2024-10460 issue is a data: URL-based spoofing vulnerability in an iframe that obscures the origin of an external protocol handler prompt. Affected: Firefox <132, Firefox ESR <128.4, Thunderbird <128.4, and Thunderbird

CVE-2024-10463

CVE-2024-10463 : Video frames could be leaked between origins in certain scenarios. Affected products include Mozilla Firefox and Thunderbird families with versions older than Firefox 132, ESR 128.4/115.17, and Thunderbird 128.4/132.0.1. The connected advisories confirm the issue and provide reme...

CVE-2024-6605

CVE-2024-6605 affects Firefox for Android, where an immediate interaction with permission prompts can enable tapjacking. The description in sources states Firefox Android

CVE-2024-6612

CVE-2024-6612 describes a CSP violation leakage in devtools that caused DNS prefetching to reveal the CSP violation. Credible sources in the provided connected documents show impact on Mozilla Firefox and Thunderbird when running versions older than 128. The vulnerability is an information disclo...