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-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-2024-8386

CVE-2024-8386 : A spoofing vulnerability where, if a site has permission to open popup windows, Select elements can appear on top of another site. Affected: Firefox versions before 130, Firefox ESR before 128.2, and Thunderbird before 128.2. Impact is described in external advisories; no exploita...

CVE-2020-26976

The CVE-2020-26976 entry describes a vulnerability in Firefox where, if a HTTPS page is embedded in HTTP and a service worker exists for the secure page, the service worker could intercept the secure page request despite the iframe not being in a secure context. Affected product: Firefox (version...

CVE-2024-8388

CVE-2024-8388 affects Mozilla Firefox for Android. A masked/overlapped notification sequence (Android Toast) used to announce fullscreen transition after the CVE-2023-6870 fix can be leveraged to spoof the browser UI. Root cause: prompts/panels from Firefox and Android OS obscuring the transition...

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-2020-12388

CVE-2020-12388 concerns Firefox on Windows where the content-process sandbox was not sufficiently lockdown, enabling a sandbox escape. Public writeups describe this as a sandbox-escape chain that abuses the Windows token/ACL handling of the content process to break out of the sandbox; the issue a...

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-2021-23997

Mozilla Firefox before 88 is affected by a use-after-free in the font cache caused by unexpected data-type conversions, which could allow arbitrary code execution. The issue affects 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-2024-11697

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-2024-53975

CVE-2024-53975 affects Firefox for iOS before version 133. The issue is a spoofing vulnerability where accessing a non-secure HTTP site that uses a non-existent port could cause the SSL padlock to appear secure, misleading users. Root cause is UI/URL handling that fails to reflect the actual secu...

CVE-2025-0246

CVE-2025-0246 describes a vulnerability where an invalid protocol scheme could allow spoofing of the address bar. The most concrete detail across sources is that this issue affected Firefox on Android and Firefox versions earlier than 134; the Android-specific note is repeated in multiple entries...

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-2019-17016

CVE-2019-17016 describes a bypass of the CSS sanitizer for pasted rules, due to incorrect rewriting of a @namespace rule, enabling potential data exposure. Affected products include Thunderbird and Firefox releases prior to versions 68.4.1/72.x respectively (Thunderbird before 68.4.1; Firefox ES...

CVE-2019-17017

CVE-2019-17017 is a type confusion in Firefox/Thunderbird (XPCVariant.cpp) caused by a missing case handling object types, leading to a crash with potential for arbitrary code execution. Public disclosures in connected documents confirm impact on Thunderbird and Firefox ESR through versions befor...

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-2024-7524

CVE-2024-7524 affects Mozilla Firefox and Firefox ESR prior to 129/115.14-128.1. The issue arises when Firefox’s web-compatibility shims, used for blocked tracking scripts by Enhanced Tracking Protection, are injected on a site protected by CSP in strict-dynamic mode. An attacker who can inject a...

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-2021-24000

CVE-2021-24000 is a race-condition vulnerability in Mozilla Firefox prior to version 88, involving requestPointerLock() and setTimeout() that could allow a user to interact with one tab while believing they were on another tab. In conjunction with certain elements (e.g., ), this could cause infor...

CVE-2024-11703

CVE-2024-11703 affects Firefox on Android, where a vulnerability could allow viewing saved passwords without the required device PIN authentication in Firefox versions older than 133. The CVE entry notes the impact is high for confidentiality and integrity, with exploitation described as requirin...

CVE-2008-4059

CVE-2008-4059 affects the XPConnect component in Mozilla Firefox prior to 2.0.0.17, allowing a remote attacker to pollute XPCNativeWrappers and execute arbitrary code with chrome privileges via SCRIPT element vectors. The Ubuntu USN-645-2 advisory documents this CVE among Firefox/XULRunner-relate...

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-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-2019-11763

The CVE-2019-11763 entry concerns a parsing defect in handling null bytes in HTML entities, causing Firefox to mis-parse entities and potentially treat HTML comments as code. This could enable XSS in web apps under certain conditions and allow masking of actual characters by filters. Public detai...

CVE-2020-6805

CVE-2020-6805 affects Thunderbird (and Firefox) with a use-after-free in the Quota manager when removing data about origins for a recently closed tab, potentially causing a crash. Affected versions include Thunderbird < 68.6 and Firefox < 74/ESR68.6/ESR

CVE-2024-7525

CVE-2024-7525 is linked to a vulnerability in Mozilla Firefox/Thunderbird where a web extension with minimal permissions could create a StreamFilter, enabling reading and modification of response bodies on any site due to a missing permission check when creating the StreamFilter. Affected product...

CVE-2016-1950

CVE-2016-1950 is a real NSS vulnerability: a heap-based buffer overflow in the ASN.1 DER parser allows remote code execution via crafted data in X.509 certificates. Affected NSS releases include 3.19.2.3 and 3.20.x, and 3.21.x before 3.21.1; it affects Mozilla Firefox up to 45.0 and Firefox ESR 3...

CVE-2019-17010

CVE-2019-17010 is a race-condition vulnerability that, during device orientation checks, can cause a use-after-free and a potentially exploitable crash in Thunderbird and Firefox products. It affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox

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-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-2019-11759

CVE-2019-11759 describes a stack buffer overflow in the HKDF output that could allow code execution or a crash. Affected products include Firefox < 70, Thunderbird < 68.2, and Firefox ESR

CVE-2020-12389

Technical details for CVE-2020-12389 (affected product, root cause, exploitability, and remediation) are not provided in the connected documents. Monitor for official updates and bulletins.

CVE-2024-53976

CVE-2024-53976 affects Firefox for iOS

CVE-2024-7530

Mozilla Firefox is affected by CVE-2024-7530 due to an incorrect garbage-collection interaction that can cause a use-after-free in the JavaScript/GC path. Affected: Firefox versions earlier than 129.0. Impact as described: potential crash and, per linked advisories, could lead to arbitrary code e...

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