| Release Date: | 2021-12-08 | |
| Impact: | None | What is this? | 
Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
See more information about CVE-2021-43536 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
| Base Score: | 6.5 | 
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N | 
| Version: | 3.0 | 
| Attack Vector: | Network | 
| Attack Complexity: | Low | 
| Privileges Required: | None | 
| User Interaction: | Required | 
| Scope: | Unchanged | 
| Confidentiality Impact: | High | 
| Integrity Impact: | None | 
| Availability Impact: | None | 
| Platform | Errata | Release Date | 
| Oracle Linux version 7 (firefox) | ELSA-2021-5014 | 2021-12-08 | 
| Oracle Linux version 7 (thunderbird) | ELSA-2021-5046 | 2021-12-10 | 
| Oracle Linux version 8 (firefox) | ELSA-2021-5013 | 2021-12-09 | 
| Oracle Linux version 8 (thunderbird) | ELSA-2021-5045 | 2021-12-10 | 
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