CVE-2017-5447

CVE-2017-5447 is an out-of-bounds read in glyph widths processing during text layout that can cause a crash and potentially expose memory. Affected products include Mozilla Thunderbird (<52.1) and Mozilla Firefox/Firefox ESR (ESR <52.1; Firefox

CVE-2018-5125

CVE-2018-5125 is a memory-safety issue reported in Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox

CVE-2019-17002

CVE-2019-17002 affects Mozilla Firefox versions before 70.0. If upgrade-insecure-requests is set in the Content Security Policy and a link is dragged and dropped from that page, the link is not upgraded to https, exposing users to potential security bypass and stability issues. The primary impact...

CVE-2019-17025

CVE-2019-17025 is a Firefox memory-safety vulnerability affecting Firefox prior to 72.0. Connected advisories enumerate multiple memory-corruption–related issues in Firefox 71 that Mozilla presumes could be exploited to run arbitrary code. The Arch Linux advisory additionally details several rela...

CVE-2023-5729

CVE-2023-5729 targets Mozilla Firefox and is disclosed as affecting Firefox versions prior to 119. A malicious site could enter fullscreen mode while triggering a WebAuthn prompt, potentially obscuring the fullscreen notification and enabling spoofing. The vulnerability is documented across multi...

CVE-2025-1937

CVE-2025-1937 summary (supported by connected documents): Memory‑safety bugs in Firefox and Thunderbird components led to potential arbitrary code execution risk for versions affected prior to 136 (Firefox/Thunderbird) and corresponding ESR lines. The advisories confirm affected products and patc...

CVE-2025-3028

CVE-2025-3028 describes a use-after-free in memory handling when JavaScript runs during XSLTProcessor document transformation. Affected products include Firefox versions before 137 and Firefox ESR before 115.22/128.9, and Thunderbird versions before 137/128.9. Public advisories (e.g., ALAS2FIREFO...

CVE-2021-23956

Mozilla Firefox before 85.0 is affected by CVE-2021-23956 due to an ambiguous file-picker UI that could confuse users intending to upload a single file, potentially resulting in a whole directory being uploaded and exposing directory contents. Public advisories (e.g., Arch Linux ASA-202102-1 and ...

CVE-2021-23977

CVE-2021-23977 affects Firefox on Android, a time-of-check-time-of-use vulnerability allowing a malicious app to read sensitive data from other application directories. The issue is limited to Firefox for Android and does not impact other OS variants; affected versions are Firefox

CVE-2023-25729

CVE-2023-25729 involves a permissions prompt issue for external schemes that was only shown for ContentPrincipals, allowing extensions using ExpandedPrincipals to open them without user interaction. This could enable actions like downloading files or interacting with installed software. Affected:...

CVE-2023-32206

CVE-2023-32206: An out-of-bounds read in the RLBox Expat driver could crash affected Mozilla components. Affected software includes Firefox <113, Firefox ESR <102.11, and Thunderbird

CVE-2017-7819

CVE-2017-7819 is a use-after-free in the design mode image resizing path that can crash the process if referenced objects have been freed. The vulnerability affects Thunderbird < 52.4 and, per the cited records, Firefox < 56 and Firefox ESR

CVE-2022-36318

CVE-2022-36318 involves directory listings for chrome:// URLs where some URL parameters were reflected. The connected documents show affected products: Firefox (including ESR lines) and Thunderbird, across multiple distributions. The underlying issue is reflected parameters in directory indexes f...

CVE-2022-38477

CVE-2022-38477 concerns memory safety bugs reported by Mozilla’s Fuzzing Team in Firefox 103 and Firefox ESR 102.1. The entry notes evidence of memory corruption and a presumption that, with sufficient effort, some bugs could be exploited to execute arbitrary code. Affected products explicitly li...

CVE-2023-25732

CVE-2023-25732 involves an out-of-bounds memory write caused by incorrect calculation of the input size when encoding data from inputStream in xpcom. The vulnerability affects Firefox before 110, Thunderbird before 102.8, and Firefox ESR before 102.8. Connected advisories corroborate the issue an...

CVE-2017-5405

CVE-2017-5405: In Mozilla Firefox/Thunderbird the vulnerability arises from how certain FTP response codes are handled, causing uninitialized port values to be used in FTP operations. Connected advisories confirm this CVE is fixed in Thunderbird/Firefox branches around version 52 and ESR 45.8 (e....

CVE-2017-5434

CVE-2017-5434 is a use-after-free in Firefox/Thunderbird related to focus-handling that can cause a potentially exploitable crash. Public details in connected advisories show the flaw affects Firefox versions before 53 (and ESR branches before 53/52.1) with Firefox 53+ fixes and ESR updates deliv...

CVE-2020-12396

CVE-2020-12396 is a set of memory-safety bugs reported in Firefox 75 that may allow arbitrary code execution. The vulnerability affects Firefox versions

CVE-2014-1490

CVE-2014-1490 : A race condition in NSS libssl session ticket processing (use-after-free) could allow remote attackers to cause a denial of service or, per the description, potentially other impact via a resumption handshake. Affected: NSS up to 3.15.4 and, by extension, Mozilla products (Firefox...

CVE-2016-9074

CVE-2016-9074: Mozilla NSS timing-side-channel mitigation is insufficient in some circumstances. Affects NSS-based components used by Thunderbird < 45.5, Firefox ESR < 45.5, and Firefox

CVE-2016-9895

CVE-2016-9895 affects Mozilla Firefox (<50.1) and Firefox ESR (<45.6) and Thunderbird (

CVE-2017-5441

CVE-2017-5441 is a use-after-free in Mozilla Firefox (and related Mozilla products) that occurs when holding a text selection during scroll events, leading to a potentially exploitable crash. Affected: Firefox < 53 (and ESR lines), Thunderbird < 52.1, Firefox ESR

CVE-2017-7791

CVE-2017-7791: A data: protocol-based modal alert spoofing vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox

CVE-2017-7809

CVE-2017-7809 is a use-after-free in an editor DOM node during tree traversal that can crash the process. Affected products cited across connected docs include Mozilla Thunderbird and Mozilla Firefox components; IBM SONAS ships vulnerable Firefox releases and lists a fix in IBM SONAS version 1.5....

CVE-2018-12367

CVE-2018-12367 affects Mozilla Thunderbird < 60, Firefox ESR < 60.1, and Firefox

CVE-2018-12397

CVE-2018-12397 affects Mozilla Firefox/Firefox ESR. The vulnerability arises from a WebExtension’s ability to access local files without the user-visible warning, bypassing the intended “Access your data for all websites” prompt. This can allow extensions to run content scripts on local pages wit...

CVE-2022-34469

CVE-2022-34469 affects Mozilla Firefox for Android. The issue allows a user to bypass a TLS certificate error on domains protected by HSTS, enabling bypass of certificate warnings (reported only on Android; other OSes unaffected). The vulnerability is addressed in Firefox 102 per the linked advis...

CVE-2022-34483

The issue is CVE-2022-34483 affecting Firefox prior to version 102. A user engaging via drag-and-drop of an image to a filesystem could have resulted in a filename containing an executable extension, potentially leading to execution of malicious code. The Astra Linux advisories corroborate that F...

CVE-2022-40959

The CVE-2022-40959 entry corresponds to a Mozilla vulnerability where during iframe navigation, FeaturePolicy was not fully initialized, allowing a bypass that leaked device permissions to untrusted subdocuments. Affected products include Firefox ESR before 102.3, Thunderbird before 102.3, and Fi...

CVE-2023-29550

CVE-2023-29550 corresponds to memory-safety bugs in Mozilla Firefox 111 and Firefox ESR 102.9 (affecting Firefox < 112, Focus for Android < 112, ESR < 102.10, Firefox for Android < 112, Thunderbird

CVE-2023-5726

The CVE-2023-5726 issue is a macOS-only browser UI vulnerability where an obscured fullscreen notification could be exposed via the file-open dialog, potentially enabling spoofing or user confusion. Affected products/versions are Firefox older than 119, Firefox ESR older than 115.4, and Thunderbi...

CVE-2023-6208

CVE-2023-6208 is a Firefox/Thunderbird issue limited to X11: text selected via the Selection API is copied into the primary selection. Affected: Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird

CVE-2017-5465

CVE-2017-5465 is an out-of-bounds read in ConvolvePixel used when processing SVG content. The issue can crash the application and may copy memory into SVG content, potentially affecting rendering. Affected products include Thunderbird and Mozilla Firefox variants: Thunderbird < 52.1, Firefox E...

CVE-2017-7787

CVE-2017-7787 is a same-origin policy bypass vulnerability affecting Thunderbird and Firefox browsers. Affected products include Thunderbird versions older than 52.3, Firefox ESR older than 52.3, and Firefox older than 55. The issue occurs on pages with embedded iframes during page reloads, allow...

CVE-2017-7802

CVE-2017-7802 is a use-after-free in the DOM during an image element resize event. The vulnerability occurs when freed image elements are accessed due to lack of strong references, potentially causing a crash. Affected products/versions from the provided documents include Thunderbird < 52.3, F...

CVE-2020-12391

CVE-2020-12391 affects Firefox up to version 76. The issue is that documents formed using data: URLs in an OBJECT element do not inherit the CSP of the creating context, which can allow the execution of scripts that should be blocked, albeit with a unique opaque origin. The description explicitly...

CVE-2022-29910

CVE-2022-29910 affects Firefox for Android. When the app is closed or sent to the background, HSTS settings were not properly recorded/persisted, potentially weakening TLS protections. Affected: Firefox for Android, versions before 100; other OSs are unaffected. Mitigation: update to the latest F...

CVE-2023-25739

CVE-2023-25739 affects Firefox <110, Thunderbird <102.8, and Firefox ESR

CVE-2017-7786

A buffer overflow in the image renderer can be triggered when painting non-displayable SVG elements, causing a crash and, in some advisories, potential arbitrary-code execution. Affected products include Mozilla Thunderbird and Firefox/Firefox ESR prior to certain versions (Thunderbird < 52.3,...

CVE-2017-7793

CVE-2017-7793 is a use-after-free in Thunderbird/Fetch API where the worker or window is freed while in use, leading to a potentially exploitable crash. Public details reference Thunderbird

CVE-2017-7800

CVE-2017-7800 is a use-after-free in WebSockets that can trigger a crash when the connection object is freed before disconnection finishes. Affected: Thunderbird < 52.3, Firefox ESR < 52.3, Firefox

CVE-2021-29952

Summary: CVE-2021-29952 affects Mozilla Firefox and Firefox for Android. A race condition during the destruction of Web Render components could cause undefined behavior and, with sufficient effort, potentially be exploited to run arbitrary code. Affected versions: Firefox < 88.0.1 and Firefox ...

CVE-2021-38491

Mozilla Firefox before version 92 is affected by CVE-2021-38491: mixed-content checks fail to analyze opaque origins, allowing some mixed content to load. The issue is documented across multiple sources (e.g., Mozilla MFSA advisory and distro advisories) and is fixed/upstream mitigated by upgradi...

CVE-2023-5727

CVE-2023-5727 affects Mozilla Firefox and Thunderbird prior to certain versions. The vulnerability arises when downloading Windows app packages (.msix, .msixbundle, .appx, .appxbundle): the executable file warning was not presented, potentially allowing commands to run on a user’s machine. Affect...

CVE-2017-7785

CVE-2017-7785 is a buffer overflow in ARIA attribute handling within the DOM that affects Thunderbird (< 52.3) and Firefox components (Firefox ESR < 52.3, Firefox

CVE-2022-34471

CVE-2022-34471 affects Mozilla Firefox prior to version 102, where the updater failed to verify that the downloaded addon update version matched the manifest, creating a risk that a tampered server manifest could cause a downgrade to an older addon. The issue is documented across multiple connect...

CVE-2022-40956

CVE-2022-40956 describes a CSP bypass in which injecting an HTML element causes requests to ignore the CSP base-uri setting and use the injected base instead. Affected products include Firefox ESR before 102.3, Thunderbird before 102.3, and Firefox before 105. The vulnerability’s root cause is t...

CVE-2022-45411

CVE-2022-45411: Cross-Site Tracing vulnerability in Firefox/Thunderbird due to servers echoing Trace requests and exposure of authorization headers/cookies; mitigations have been implemented via browser fetch/XHR limits and non-standard headers like X-Http-Method-Override. The issue is acknowledg...

CVE-2022-46875

CVE-2022-46875 concerns Mozilla Firefox/Thunderbird on Mac OS where the executable warning was not shown when downloading .atloc/.ftploc files, enabling potential command execution. Affects Firefox < 108, Firefox ESR < 102.6, and Thunderbird

CVE-2023-5722

CVE-2023-5722 describes an information-disclosure vulnerability in Mozilla Firefox prior to 119, where an attacker using iterative requests can learn the size of an opaque response and contents of a server-supplied Vary header. Vendor advisories (Firefox fixes in 119 and ESR 115.4.1/115.4.x as ci...