Vulnerabilities > Mozilla > Firefox > 21.0

DATE CVE VULNERABILITY TITLE RISK
2020-12-09 CVE-2020-26968 Out-of-bounds Write vulnerability in Mozilla Firefox
Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4.
network
mozilla CWE-787
critical
9.3
2020-12-09 CVE-2020-26967 Unspecified vulnerability in Mozilla Firefox
When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page.
network
mozilla
4.3
2020-12-09 CVE-2020-26966 Unspecified vulnerability in Mozilla Firefox
Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak.
network
mozilla
4.3
2020-12-09 CVE-2020-26965 Improper Cross-boundary Removal of Sensitive Data vulnerability in Mozilla Firefox
Some websites have a feature "Show Password" where clicking a button will change a password field into a textbook field, revealing the typed password.
network
mozilla CWE-212
4.3
2020-12-09 CVE-2020-26963 Unspecified vulnerability in Mozilla Firefox
Repeated calls to the history and location interfaces could have been used to hang the browser.
network
mozilla
4.3
2020-12-09 CVE-2020-26962 Improper Restriction of Rendered UI Layers or Frames vulnerability in Mozilla Firefox
Cross-origin iframes that contained a login form could have been recognized by the login autofill service, and populated.
network
mozilla CWE-1021
4.3
2020-12-09 CVE-2020-26961 Unspecified vulnerability in Mozilla Firefox
When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver.
network
mozilla
4.3
2020-12-09 CVE-2020-26960 Use After Free vulnerability in Mozilla Firefox
If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash.
network
mozilla CWE-416
critical
9.3
2020-12-09 CVE-2020-26959 Use After Free vulnerability in Mozilla Firefox
During browser shutdown, reference decrementing could have occured on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash.
network
mozilla CWE-416
6.8
2020-12-09 CVE-2020-26958 Cross-site Scripting vulnerability in Mozilla Firefox
Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker.
network
mozilla CWE-79
4.3