Access of Resource Using Incompatible Type ('Type Confusion') Affecting firefox package, versions <140.8.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.29% (20th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FIREFOX-17764403
  • published1 Jul 2026
  • disclosed24 Feb 2026

Introduced: 24 Feb 2026

CVE-2026-2783  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Chainguard firefox to version 140.8.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS Base Scores

version 3.1