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Findings

CVE-2026-2797

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

Published Feb 24, 2026 · updated Jul 15, 2026 · mozilla firefox

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

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. Feb 24, 2026 · NIST NVD

    Detected

    Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

  2. Jul 15, 2026 · NIST NVD

    Updated

    Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Affected

  • cpe mozilla/firefoxversion unspecified
  • cpe mozilla/thunderbirdversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-2797

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-2797

    Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

    nvd.nist.gov

References

CVE-2026-2797 · ZeroDay Findings