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Findings

CVE-2026-8390

Use-after-free in the JavaScript: WebAssembly component.

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

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

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

    Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

  2. Jul 15, 2026 · NIST NVD

    Updated

    Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

Affected

  • cpe mozilla/firefoxversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-8390

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-8390

    Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

    nvd.nist.gov

References