Access of Resource Using Incompatible Type ('Type Confusion') Affecting firefox-esr package, versions <115.15.0esr-1~deb12u1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
4.4% (91st percentile)

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  • Snyk IDSNYK-ECHOLATEST-FIREFOXESR-18168935
  • published22 Jul 2026
  • disclosed3 Sept 2024

Introduced: 3 Sep 2024

CVE-2024-8381  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Echo:latest firefox-esr to version 115.15.0esr-1~deb12u1 or higher.

NVD Description

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

A potentially exploitable type confusion could be triggered when looking up a property name on an object being used as the with environment. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.

CVSS Base Scores

version 3.1