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

medium Tenable Cloud Security Plugin ID 476319

Description

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

- Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158,
Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5. (CVE-2026-109729)

Solution

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

Plugin Details

Severity: Medium

ID: 476319

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: 2.1

Percentile: 8.18

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-109729

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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-2026-109729

Detections

Analytics