# Log4j Vulnerability Update

DevFeed: [Log4j Vulnerability Update](<https://devfeed.tech/articles/log4j-vulnerability-update-3873.md>)

Original publisher: [Read original article](<https://laravel.com/blog/log4j-vulnerability-update>)

Author: James Brooks

Published: 2021-12-15T13:14:00Z

Content type: news

Language: en

Sources: [Laravel Blog](<https://devfeed.tech/sources/laravel-blog.md>)

Topics: [vulnerability](<https://devfeed.tech/topics/vulnerability.md>), [Java](<https://devfeed.tech/topics/java.md>), [Library](<https://devfeed.tech/topics/library.md>), [Exploit](<https://devfeed.tech/topics/exploit.md>), [elasticsearch](<https://devfeed.tech/topics/elasticsearch.md>), [Laravel](<https://devfeed.tech/topics/laravel.md>)

Tags: [apache](<https://devfeed.tech/tags/apache.md>), [docker](<https://devfeed.tech/tags/docker.md>), [elasticsearch](<https://devfeed.tech/tags/elasticsearch.md>), [java](<https://devfeed.tech/tags/java.md>), [laravel](<https://devfeed.tech/tags/laravel.md>), [library](<https://devfeed.tech/tags/library.md>), [log4j](<https://devfeed.tech/tags/log4j.md>), [news](<https://devfeed.tech/tags/news.md>), [remote-code-execution](<https://devfeed.tech/tags/remote-code-execution.md>), [script](<https://devfeed.tech/tags/script.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>)

## AI overview

This update explains the Log4Shell vulnerability in Apache Log4j, a Java logging library that can allow remote code execution through a specific string. Laravel Forge and Laravel Vapor do not install or use Log4j by default, but manually installed applications, libraries, custom layers, or customized environments may still be affected and should be checked.

## Source excerpt

Log4j is a Java library by Apache used to log debug messages within applications. It's recently been featured in news outlets around the world due to a vulnerability (known as Log4Shell) that was discovered allowing remote code execution using a specific string.