CVE-2026-8389

Summary

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/crixpwn/CVE-2026-8389

firefox: JIT miscompilation in the JavaScript Engine: JIT component

Additional References

• https://access.redhat.com/security/cve/CVE-2026-8389
• https://bugzilla.redhat.com/show_bug.cgi?id=2476466
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8389.json

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2036983
• https://www.mozilla.org/security/advisories/mfsa2026-45/

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