Mozilla
7,140 known vulnerabilities
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A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results
A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results i
A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a poten
A race condition is present in the crash generation server used to generate data for the crash reporter. This issue can
Images from a different domain can be read using a canvas object in some circumstances. This could be used to steal imag
A possible vulnerability exists where type confusion can occur when manipulating JavaScript objects in object groups, al
If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has
Mozilla developers and community members reported memory safety bugs present in Firefox 66. Some of these bugs showed ev
As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack a
Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunde
A vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other fil
Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before b
The HTTP Alternative Services header, Alt-Svc, can be used by a malicious site to scan all TCP ports of any host that th
A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1
When a user navigates to site marked as unsafe by the Safebrowsing API, warning messages are displayed and navigation is
Application permissions give additional remote troubleshooting permission to the site input.mozilla.org, which has been
A vulnerability exists during the installation of add-ons where the initial fetch ignored the origin attributes of the b
The unicode latin 'kra' character can be used to spoof a standard 'k' character in the addressbar. This allows for domai
Some unicode characters are incorrectly treated as whitespace during the parsing of web content instead of triggering pa
When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bou
Activity Stream can display content from sent from the Snippet Service website. This content is written to innerHTML on
A vulnerability exists where the caret ("^") character is improperly escaped constructing some URIs due to it being used
Until explicitly accessed by script, window.globalThis is not enumerable and, as a result, is not visible to code such a
Due to an error while parsing page content, it is possible for properly sanitized user input to be misinterpreted and le
Necko can access a child on the wrong thread during UDP connections, resulting in a potentially exploitable crash in som
A use-after-free vulnerability can occur in HTTP/2 when a cached HTTP/2 stream is closed while still in use, resulting i
POST requests made by NPAPI plugins, such as Flash, that receive a status 308 redirect response can bypass CORS requirem
When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages o
Mozilla developers and community members reported memory safety bugs present in Firefox 67. Some of these bugs showed ev
Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firefox ESR 60.7. Some of
Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result
A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow
A flaw in Thunderbird's implementation of iCal causes a type confusion in icaltimezone_get_vtimezone_properties when pro
A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processin
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when proce
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing cer
A hyperlink using protocols associated with Internet Explorer, such as IE.HTTP:, can be used to open local files at a kn
The default webcal: protocol handler will load a web site vulnerable to cross-site scripting (XSS) attacks. This default
A hyperlink using the res: protocol can be used to open local files at a known location in Internet Explorer if a user a
A malicious page can briefly cause the wrong name to be highlighted as the domain name in the addressbar during page nav
If a crafted hyperlink is dragged and dropped to the bookmark bar or sidebar and the resulting bookmark is subsequently
If the ALT and "a" keys are pressed when users receive an extension installation prompt, the extension will be installed
Files with the .JNLP extension used for "Java web start" applications are not treated as executable content for download
A custom cursor defined by scripting on a site can position itself over the addressbar to spoof the actual cursor when i
A vulnerability exists in the Windows sandbox where an uninitialized value in memory can be leaked to a renderer from a
The bufferdata function in WebGL is vulnerable to a buffer overflow with specific graphics drivers on Linux. This could
A use-after-free vulnerability can occur when listeners are removed from the event listener manager while still in use,
A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main t
A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content.
A third party website can access information available to a user with access to a restricted bug entry using the image g
Frequently Asked Questions
How many CVEs affect Mozilla?
Mozilla has 7,140 CVE records in our database, including 872 critical and 3343 high severity vulnerabilities. 11 of these are listed in CISA's Known Exploited Vulnerabilities catalog.
What are the most severe Mozilla vulnerabilities?
Mozilla has 872 critical severity (CVSS 9.0+) and 3343 high severity (CVSS 7.0-8.9) vulnerabilities. 11 vulnerabilities are confirmed as actively exploited in the wild.
How can I scan for Mozilla vulnerabilities?
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