CVE-2026-2796
Received
Received - Intake
JIT Miscompilation in Firefox WebAssembly Causes Potential Execution Flaws
Publication date: 2026-02-24
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 148.0 (exc) |
| mozilla | thunderbird | to 148.0 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-843 | The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a JIT (Just-In-Time) miscompilation issue in the JavaScript WebAssembly component of Firefox versions earlier than 148.
How can this vulnerability impact me? :
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How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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How can this vulnerability be detected on my network or system? Can you suggest some commands?
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