Chainguard: multiple firefox packages: security update to 154.0-r0

critical Tenable Cloud Security Plugin ID 476283

Description

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

- Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox
ESR 153.1, Thunderbird 154, and Thunderbird 153.1. (CVE-2026-74938)

Solution

Update the firefox library and its related packages to version 154.0-r0 or later.

Plugin Details

Severity: Critical

ID: 476283

Version: Revision 1.1

Type: Local

Family: Chainguard Local Security Checks

Published: 10/20/2026

Updated: 10/20/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.52

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-74938

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: 8/17/2026

Reference Information

CVE: CVE-2026-74938

IAVA: 2026-A-0876-S

Detections

Analytics