Mozilla Firefox vulnerabilities

CVE-2018-5164 [MEDIUM] CWE-79 CVE-2018-5164: Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with t Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the "multipart/x-mixed-replace" MIME type. This could allow for script to run where CSP should block it, allowing for cross-site scripting (XSS) and other attacks. This vulnerability affects Firefox < 60.

CVE-2017-5466 [MEDIUM] CWE-79 CVE-2017-5466: If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:tex If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

CVE-2019-11744 [MEDIUM] CWE-79 CVE-2019-11744: Some HTML elements, such as &lt;title&gt; and &lt;textarea&gt;, can contain literal angle brackets w Some HTML elements, such as and , can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as

CVE-2017-5458 [MEDIUM] CWE-79 CVE-2017-5458: When a "javascript:" URL is drag and dropped by a user into the addressbar, the URL will be processe When a "javascript:" URL is drag and dropped by a user into the addressbar, the URL will be processed and executed. This allows for users to be socially engineered to execute an XSS attack on themselves. This vulnerability affects Firefox < 53.

CVE-2006-0296 [MEDIUM] CVE-2006-0296: The XULDocument.persist function in Mozilla, Firefox before 1.5.0.1, and SeaMonkey before 1.0 does n The XULDocument.persist function in Mozilla, Firefox before 1.5.0.1, and SeaMonkey before 1.0 does not validate the attribute name, which allows remote attackers to execute arbitrary Javascript by injecting RDF data into the user's localstore.rdf file.

CVE-2020-26956 [MEDIUM] CWE-79 CVE-2020-26956: In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

CVE-2016-1937 [MEDIUM] CWE-79 CVE-2016-1937: The protocol-handler dialog in Mozilla Firefox before 44.0 allows remote attackers to conduct clickj The protocol-handler dialog in Mozilla Firefox before 44.0 allows remote attackers to conduct clickjacking attacks via a crafted web site that triggers a single-click action in a situation where a double-click action was intended.

CVE-2012-3972 [MEDIUM] CWE-200 CVE-2012-3972: The format-number functionality in the XSLT implementation in Mozilla Firefox before 15.0, Firefox E The format-number functionality in the XSLT implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to obtain sensitive information via unspecified vectors that trigger a heap-based buffer over-read.

CVE-2016-9903 [MEDIUM] CWE-79 CVE-2016-9903: Mozilla's add-ons SDK had a world-accessible resource with an HTML injection vulnerability. If an ad Mozilla's add-ons SDK had a world-accessible resource with an HTML injection vulnerability. If an additional vulnerability allowed this resource to be loaded as a document it could allow injecting content and script into an add-on's context. This vulnerability affects Firefox < 50.1.

CVE-2016-1941 [MEDIUM] CWE-79 CVE-2016-1941: The file-download dialog in Mozilla Firefox before 44.0 on OS X enables a certain button too quickly The file-download dialog in Mozilla Firefox before 44.0 on OS X enables a certain button too quickly, which allows remote attackers to conduct clickjacking attacks via a crafted web site that triggers a single-click action in a situation where a double-click action was intended.

CVE-2019-17000 [MEDIUM] CWE-79 CVE-2019-17000: An object tag with a data URI did not correctly inherit the document's Content Security Policy. This An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This vulnerability affects Firefox < 70.

CVE-2005-2264 [HIGH] CVE-2005-2264: Firefox before 1.0.5 allows remote attackers to steal sensitive information by opening a malicious l Firefox before 1.0.5 allows remote attackers to steal sensitive information by opening a malicious link in the Firefox sidebar using the _search target, then injecting script into other pages via a data: URL.

CVE-2022-29912 [MEDIUM] CWE-601 CVE-2022-29912: Requests initiated through reader mode did not properly omit cookies with a SameSite attribute. This Requests initiated through reader mode did not properly omit cookies with a SameSite attribute. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

CVE-2021-23955 [MEDIUM] CWE-1021 CVE-2021-23955: The browser could have been confused into transferring a pointer lock state into another tab, which The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox < 85.

CVE-2019-11741 [MEDIUM] CWE-79 CVE-2019-11741: A compromised sandboxed content process can perform a Universal Cross-site Scripting (UXSS) attack o A compromised sandboxed content process can perform a Universal Cross-site Scripting (UXSS) attack on content from any site it can cause to be loaded in the same process. Because addons.mozilla.org and accounts.firefox.com have close ties to the Firefox product, malicious manipulation of these sites within the browser can potentially be used to modif

CVE-2017-5405 [MEDIUM] CWE-1187 CVE-2017-5405: Certain response codes in FTP connections can result in the use of uninitialized values for ports in Certain response codes in FTP connections can result in the use of uninitialized values for ports in FTP operations. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

CVE-2014-1552 [MEDIUM] CWE-264 CVE-2014-1552: Mozilla Firefox before 31.0 and Thunderbird before 31.0 do not properly implement the sandbox attrib Mozilla Firefox before 31.0 and Thunderbird before 31.0 do not properly implement the sandbox attribute of the IFRAME element, which allows remote attackers to bypass intended restrictions on same-origin content via a crafted web site in conjunction with a redirect.

CVE-2025-10536 [MEDIUM] CWE-200 CVE-2025-10536: Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 1 Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

CVE-2017-5383 [MEDIUM] CWE-20 CVE-2017-5383: URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger pu URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

CVE-2022-29910 [MEDIUM] CWE-601 CVE-2022-29910: When closed or sent to the background, Firefox for Android would not properly record and persist HST When closed or sent to the background, Firefox for Android would not properly record and persist HSTS settings.*Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 100.