CVE-2026-118024: Firefox use-after-free in Graphics: Text component

CVE-2026-118024 · Severity: info · Published 2026-10-27

Firefox, a web browser used by millions to access websites and web applications, contains a use-after-free vulnerability in its Graphics: Text component that could allow an attacker to cause crashes or potentially execute arbitrary code. This vulnerability affects the text rendering functionality of the browser and has been patched in Firefox 159.

Technologies: Mozilla Firefox. Vendors: Mozilla.

Quick answers

Is CVE-2026-118024 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-118024 being exploited in the wild.
How severe is CVE-2026-118024?
Informational severity, published 27 October 2026.
Which products and versions are affected?
Mozilla Firefox before 159.
Is there a fix for CVE-2026-118024?
Yes: fixed in Firefox 159. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-118024 attacked?
It is in a web application.
Am I affected by CVE-2026-118024?
Check whether you run Mozilla Firefox at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Firefox 159

Technical details

A use-after-free vulnerability in the Graphics: Text component allows attackers to access memory that has already been freed during text rendering operations. The vulnerability could be triggered through normal browsing or specially crafted content, potentially leading to process crash or code execution depending on memory layout and exploitation sophistication. The issue is fixed in Firefox 159.

Affected products

  • Mozilla Firefox before 159

Timeline

  • 2026-10-27: disclosed

References

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