JIT miscompilation in the JavaScript Engine: JIT component.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. May 12, 2026 · NIST NVD

   Detected

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

2. Jul 15, 2026 · NIST NVD

   Updated

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

Affected

• cpe mozilla/firefoxversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-8389

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-8389

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

  nvd.nist.gov

References

• Reference · access.redhat.com
• Permissions Required · bugzilla.mozilla.org
• Reference · bugzilla.redhat.com
• Reference · github.com
• Reference · security.access.redhat.com
• Vendor Advisory · mozilla.org