Chainguard: firefox-esr-140: security update to 140.17.0-r2

high Tenable Cloud Security Plugin ID 476290

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158,
Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5. (CVE-2026-109720)

Solution

Update the firefox-esr-140 library and its related packages to version 140.17.0-r2 or later.

Plugin Details

Severity: High

ID: 476290

Version: Revision 1.1

Type: Local

Family: Chainguard Local Security Checks

Published: 10/20/2026

Updated: 10/20/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.47

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:N

CVSS Score Source: CVE-2026-109720

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-109720

Detections

Analytics