An attacker who can request eval‑stdin.php can send arbitrary PHP code through the request body (or via other input methods) and have it executed on the server – with the same privileges as the web server user.
In the world of PHP development, Composer has revolutionized dependency management. However, a common misconfiguration—serving the vendor directory directly from the web root—can lead to severe security vulnerabilities. One of the most notorious files involved in such exploits is vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php .
If you are seeing this in server logs or as a vulnerability scan result, to prevent a full server compromise. An attacker who can request eval‑stdin
The discovery of a live "index of" page containing this file is a high-severity security alert, as it signals that a web server is vulnerable to , a Remote Code Execution (RCE) vulnerability that can lead to the immediate and complete compromise of the website and its server.
inurl:"/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php" One of the most notorious files involved in
Once the file's location is confirmed, an attacker can send a simple HTTP POST request to that URL to execute arbitrary commands. The following curl command demonstrates a Proof of Concept (PoC) that instructs the server to calculate and return the number pi (π), confirming code execution:
Directory listing (also known as “index of”) is a web server feature that generates a visual list of files when no default index page (like index.html or index.php ) is present. While sometimes convenient for file sharing, it is a golden ticket for attackers. inurl:"/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin
We need to produce an informative, long-form article. Likely the article should discuss the security implications of exposed PHPUnit files, particularly the eval-stdin.php script that allows remote code execution. Also discuss how attackers search for "index of" listings, and how to prevent such exposures.
该漏洞影响范围包括 PHPUnit 4.8.28 之前的所有 4.x 版本，以及 5.6.3 之前的所有 5.x 版本。据 CVSS v3 评分，该漏洞的严重程度高达 ，意味着攻击者无需任何身份验证，即可通过网络远程获取服务器的最高控制权。