Vulnerabilities > Mozilla > Firefox > 21.0

DATE CVE VULNERABILITY TITLE RISK
2021-12-08 CVE-2021-43538 Race Condition vulnerability in multiple products
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks.
network
low complexity
mozilla debian CWE-362
4.3
2021-12-08 CVE-2021-43539 Use After Free vulnerability in multiple products
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers.
network
low complexity
mozilla debian CWE-416
8.8
2021-12-08 CVE-2021-43540 Unspecified vulnerability in Mozilla Firefox
WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension.
network
mozilla
4.3
2021-12-08 CVE-2021-43541 When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped.
network
low complexity
mozilla debian
6.5
2021-12-08 CVE-2021-43542 Information Exposure Through an Error Message vulnerability in multiple products
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols.
network
low complexity
mozilla debian CWE-209
6.5
2021-12-08 CVE-2021-43543 Cross-site Scripting vulnerability in multiple products
Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content.
network
low complexity
mozilla debian CWE-79
6.1
2021-12-08 CVE-2021-43544 Cross-site Scripting vulnerability in Mozilla Firefox
When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks.
network
mozilla CWE-79
4.3
2021-12-08 CVE-2021-43545 Excessive Iteration vulnerability in multiple products
Using the Location API in a loop could have caused severe application hangs and crashes.
network
low complexity
mozilla debian CWE-834
6.5
2021-12-08 CVE-2021-43546 Improper Restriction of Rendered UI Layers or Frames vulnerability in multiple products
It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.
network
low complexity
mozilla debian CWE-1021
4.3
2021-11-03 CVE-2021-29991 HTTP Request Smuggling vulnerability in Mozilla Firefox
Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers.
network
mozilla CWE-444
5.8