CVE-2026-117921
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- CVE-2026-117921
CVE Details
| Release Date: | 2026-10-27 | |
| Impact: | Important | What is this? |
Description
Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
See more information about CVE-2026-117921 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: | 8.8 |
| Vector String: | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 10 (firefox) | ELSA-2026-93956 | 2026-11-03 |
| Oracle Linux version 8 (firefox) | ELSA-2026-94405 | 2026-11-03 |
| Oracle Linux version 9 (firefox) | ELSA-2026-93957 | 2026-11-03 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections:
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