Is this vulnerability remotely exploitable over the internet?

It can be, if an attacker can reach and write to the Redis instance used by Laravel Reverb—especially in deployments where Redis is exposed without authentication or is reachable from untrusted networks. If Redis access is tightly restricted, the practical exploitability is reduced.

What level of access does an attacker need to exploit this?

The attacker needs the ability to influence or inject data into the Redis channel that Reverb uses for scaling communication. This might come from direct network access to Redis, a compromised internal service that can publish messages, or misconfigured infrastructure that exposes Redis more broadly than intended.

What is the safest general fix pattern?

The most robust fix is to remove unsafe deserialization entirely from the communication path: use data-only formats (like JSON) and avoid `unserialize()` on untrusted data. If deserialization must remain, enforce strict class whitelists and avoid any gadgets with side effects during object lifecycle operations.

Severity:

CRITICAL RISK

(9.8)

Unsafe PHP Deserialization (CWE-502) in Laravel Reverb Redis Scaling Backend

CVE-2026-23524

Published:

Jan 21, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Unsafe PHP Deserialization (CWE-502) in Laravel Reverb Redis Scaling Backend

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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