Vulnerabilities > Mozilla > Firefox > 21.0
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2023-11-21 | CVE-2023-6205 | Use After Free vulnerability in multiple products It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. | 6.5 |
| 2023-11-21 | CVE-2023-6206 | Improper Restriction of Rendered UI Layers or Frames vulnerability in multiple products The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. | 5.4 |
| 2023-11-21 | CVE-2023-6207 | Use After Free vulnerability in multiple products Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. | 8.8 |
| 2023-11-21 | CVE-2023-6208 | When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. | 8.8 |
| 2023-11-21 | CVE-2023-6209 | Path Traversal vulnerability in multiple products Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. | 6.5 |
| 2023-11-21 | CVE-2023-6210 | Unspecified vulnerability in Mozilla Firefox When an https: web page created a pop-up from a "javascript:" URL, that pop-up was incorrectly allowed to load blockable content such as iframes from insecure http: URLs This vulnerability affects Firefox < 120. | 6.5 |
| 2023-11-21 | CVE-2023-6211 | Improper Restriction of Rendered UI Layers or Frames vulnerability in Mozilla Firefox If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. | 6.5 |
| 2023-11-21 | CVE-2023-6212 | Out-of-bounds Write vulnerability in multiple products Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. | 8.8 |
| 2023-11-21 | CVE-2023-6213 | Out-of-bounds Write vulnerability in Mozilla Firefox Memory safety bugs present in Firefox 119. | 8.8 |
| 2023-10-25 | CVE-2023-5721 | Improper Restriction of Rendered UI Layers or Frames vulnerability in multiple products It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay. | 4.3 |