SCA: security update for laravel/reverb (GHSA-m27r-m6rx-mhm4)

critical Tenable Cloud Security Plugin ID 436858

Description

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

- Laravel Reverb provides a real-time WebSocket communication backend for Laravel applications. In versions
1.6.3 and below, Reverb passes data from the Redis channel directly into PHP’s unserialize() function
without restricting which classes can be instantiated, which leaves users vulnerable to Remote Code
Execution. The exploitability of this vulnerability is increased because Redis servers are commonly
deployed without authentication, but only affects Laravel Reverb when horizontal scaling is enabled
(REVERB_SCALING_ENABLED=true). This issue has been fixed in version 1.7.0. As a workaround, require a
strong password for Redis access and ensure the service is only accessible via a private network or local
loopback, and/or set REVERB_SCALING_ENABLED=false to bypass the vulnerable logic entirely (if the
environment uses only one Reverb node). (CVE-2026-23524)

Plugin Details

Severity: Critical

ID: 436858

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 1/21/2026

Updated: 6/1/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-23524

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/21/2026

Vulnerability Publication Date: 1/21/2026

Reference Information

CVE: CVE-2026-23524

cwe: CWE-502

Detections

Analytics