CVE-2026-12302
Undergoing Analysis
Undergoing Analysis - In Progress
DOM Security Bypass in Firefox
Vulnerability report for CVE-2026-12302, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-16
Last updated on: 2026-06-16
Assigner: Mozilla Corporation
Description
Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | 152 |
| mozilla | firefox_esr | 140.12 |
| mozilla | firefox_esr | 115.37 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-693 | The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. |