CVE-2025-6429
BaseFortify
Publication date: 2025-06-24
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | From 60.9.0 (exc) |
| mozilla | firefox | From 60.9.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-116 | The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in Firefox involves incorrect parsing of a URL in an embed tag, which could cause the URL to be rewritten to the youtube.com domain. This flaw could allow attackers to bypass website security checks that restrict which domains users are allowed to embed.
How can this vulnerability impact me? :
The vulnerability could allow malicious content to be embedded from unauthorized domains by exploiting the URL rewriting to youtube.com, potentially leading to security risks such as content spoofing or unauthorized data exposure.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update Firefox to version 140 or later, or Firefox ESR to version 128.12 or later, as the issue affects versions prior to these.