Cross site scripting

A "data:" URL loaded in a new tab did not inherit the Content Security Policy CSP of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potentia...

Path traversal

A content security policy CSP "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox 55...

CVE-2018-5175

A mechanism to bypass Content Security Policy CSP protections on sites that have a "script-src" policy of "'strict-dynamic'". If a target website contains an HTML injection flaw an attacker could inject a reference to a copy of the "require.js" library that is part of Firefox's Developer Tools, a...

CVE-2017-7823

The CVE-2017-7823 entry describes a CSP sandbox issue where the sandbox did not create a unique origin, causing documents to behave as if allow-same-origin were always specified and enabling potential XSS. Affected products are Mozilla Thunderbird < 52.4, Firefox < 56, and Firefox ESR

CVE-2016-9895

Event handlers on "marquee" elements were executed despite a strict Content Security Policy CSP that disallowed inline JavaScript. This vulnerability affects Firefox 50.1, Firefox ESR 45.6, and Thunderbird 45.6...

CVE-2017-7808

A content security policy CSP "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox 55...

CVE-2016-9895

Event handlers on "marquee" elements were executed despite a strict Content Security Policy CSP that disallowed inline JavaScript. This vulnerability affects Firefox 50.1, Firefox ESR 45.6, and Thunderbird 45.6...

CVE-2016-9071

Content Security Policy combined with HTTP to HTTPS redirection can be used by malicious server to verify whether a known site is within a user's browser history. This vulnerability affects Firefox 50...

CVE-2017-7803

CVE-2017-7803 affects Thunderbird and Firefox browsers with CSP in a page header containing a sandbox directive. The root cause is that when sandbox is present, other CSP directives are ignored, leading to incorrect CSP enforcement. Documents in connected sources specify affected products (Thunde...

CVE-2016-9071

CVE-2016-9071 describes a vulnerability in Mozilla Firefox prior to 50 where Content Security Policy combined with HTTP-to-HTTPS redirection could allow a malicious server to determine if a site is present in a user’s browsing history. Impact: history verification via CSP/HSTS/redirect. Affected ...

CVE-2018-5164

CVE-2018-5164 affects Firefox before 60, where the Content Security Policy (CSP) is not applied to all parts of multipart content using MIME type multipart/x-mixed-replace. This can permit script execution where CSP should block it, enabling an XSS-style issue. The vulnerability is documented acr...

CVE-2018-5175

CVE-2018-5175 describes a universal CSP bypass on sites using strict-dynamic. An HTML injection flaw could reference Firefox DevTools’ require.js to bypass CSP and execute injected scripts. Affected product: Mozilla Firefox

CVE-2016-9895

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

CVE-2016-9071

Content Security Policy combined with HTTP to HTTPS redirection can be used by malicious server to verify whether a known site is within a user's browser history. This vulnerability affects Firefox 50...

CVE-2017-7788

When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy CSP as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox 55...

CVE-2017-7808

A content security policy CSP "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox 55...

CVE-2017-7834

A "data:" URL loaded in a new tab did not inherit the Content Security Policy CSP of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potentia...

CVE-2018-5175

A mechanism to bypass Content Security Policy CSP protections on sites that have a "script-src" policy of "'strict-dynamic'". If a target website contains an HTML injection flaw an attacker could inject a reference to a copy of the "require.js" library that is part of Firefox's Developer Tools, a...

CVE-2017-7834

CVE-2017-7834 affects Mozilla Firefox < 57.0. A data: URL loaded in a new tab could bypass the original page’s CSP, potentially enabling JavaScript execution and cross-site scripting when the CSP wasn’t inherited. This is tied to how data: documents formerly inherited context from the original...

CVE-2016-9895

Event handlers on "marquee" elements were executed despite a strict Content Security Policy CSP that disallowed inline JavaScript. This vulnerability affects Firefox 50.1, Firefox ESR 45.6, and Thunderbird 45.6...