JavaScript Engine Vulnerability in Firefox by Mozilla
CVE-2026-8388

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 12 May 2026

What is CVE-2026-8388?

A boundary condition flaw exists in the JavaScript Engine's Just-In-Time (JIT) compilation component in Mozilla Firefox, potentially allowing attackers to exploit this issue. This vulnerability has been addressed in version 150.0.3 of Firefox, ensuring enhanced security and stability for users. For more detailed information, refer to the official Mozilla security advisory and the associated Bugzilla report.

Affected Version(s)

Firefox 150.0.3

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2036978

https://www.mozilla.org/security/advisories/mfsa2026-45/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
May 12, 2026
Vulnerability Reserved
May 12, 2026

Credit

ggwhyp

CVE-2026-8388 Data

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