| CVE-2021-4140 | Date: (C)2022-02-08 (M)2024-03-27 |
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V3 Severity: | CVSS V2 Severity: |
| CVSS Score : 10.0 | CVSS Score : |
| Exploit Score: 3.9 | Exploit Score: |
| Impact Score: 6.0 | Impact Score: |
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| CVSS V3 Metrics: | CVSS V2 Metrics: |
| Attack Vector: NETWORK | Access Vector: |
| Attack Complexity: LOW | Access Complexity: |
| Privileges Required: NONE | Authentication: |
| User Interaction: NONE | Confidentiality: |
| Scope: CHANGED | Integrity: |
| Confidentiality: HIGH | Availability: |
| Integrity: HIGH | |
| Availability: HIGH | |
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