PHPUnit - RCE (CVE-2017-9841)
28167Exploiting IPs reported
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.
CrowdSec analysis
CVE-2017-9841 is a critical vulnerability in PHPUnit that allows remote attackers to execute arbitrary PHP code by accessing a test script inadvertently left exposed in web-accessible locations.
CrowdSec has been tracking this vulnerability and its exploits since 15th of December 2023.
CrowdSec network data shows that most actors exploiting CVE-2017-9841 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. CrowdSec network telemetry also shows that exploitation of CVE-2017-9841 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.
Attack attempts are characterized by requests to URLs ending in /vendor/phpunit/phpunit/src/util/php/eval-stdin.php.
Exploitation
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Common Weakness Enumeration (CWE)
Protection
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Blocklist
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