CVE-2025-10529
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-16
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
Same-origin policy bypass in the Layout component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | thunderbird | to 140.0 (inc) |
| mozilla | firefox | From 60.9.0 (exc) |
| mozilla | firefox | From 60.9.0 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-942 | The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update Firefox to version 143 or later, and Thunderbird to version 140.3 or later.
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