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Findings

CVE-2026-8391

Other issue in the JavaScript Engine component.

Published May 12, 2026 · updated Jul 15, 2026 · mozilla firefox

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Code

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

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 12, 2026 · NIST NVD

    Detected

    Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

  2. Jul 15, 2026 · NIST NVD

    Updated

    Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Affected

  • cpe mozilla/firefoxversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-8391

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-8391

    Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

    nvd.nist.gov

References