REDHAT-BUG-2517840: Use After Free

Published Aug 18, 2026
·
Updated

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.

Affected Software

1 affected component
Mozilla Firefox<154, >=140.0<=140.13, >=153.0<=153.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Mozilla Firefox to a version that resolves this vulnerability.

    Fixed in 154
  2. Upgrade

    Upgrade Mozilla Firefox ESR to a version that resolves this vulnerability.

    Fixed in 140.14
  3. Upgrade

    Upgrade Mozilla Firefox ESR to a version that resolves this vulnerability.

    Fixed in 153.1

Event History

Aug 18, 2026
Data Sourced
via Red Hat·12:52 PM
DescriptionSeverityAffected Software

Company

Resources

Contact

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