CVE-2026-8389
JIT miscompilation in the JavaScript Engine: JIT component
CVSS Score
8.8
EPSS Score
0.3%
EPSS Percentile
25th
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | May 12, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2036983 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-45/ github.com: https://github.com/crixpwn/CVE-2026-8389 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-8389 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2476466 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8389.json
Credits
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