CVE-2020-26956
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- CVE-2020-26956
CVE Details
| Release Date: | 2020-12-09 | |
| Impact: | None | What is this? |
Description
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
See more information about CVE-2020-26956 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.1 |
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Changed |
| Confidentiality Impact: | Low |
| Integrity Impact: | Low |
| Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 6 (firefox) | ELSA-2020-5257 | 2020-12-01 |
| Oracle Linux version 6 (thunderbird) | ELSA-2020-5238 | 2020-12-01 |
| Oracle Linux version 7 (firefox) | ELSA-2020-5239 | 2020-12-01 |
| Oracle Linux version 7 (thunderbird) | ELSA-2020-5235 | 2020-12-01 |
| Oracle Linux version 8 (firefox) | ELSA-2020-5237 | 2020-12-01 |
| Oracle Linux version 8 (thunderbird) | ELSA-2020-5236 | 2020-12-01 |
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