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CVE-2021-48016

CRITICAL
9.8NVD

Summary

generated automatically from NVD data

DedeCMS through 5.8.1-beta has a PHP code injection flaw (CWE-94) in the ShowMsg() function, which writes the HTTP Referer header into a DedeTemplate string that is then included. An unauthenticated attacker can send a crafted Referer to /plus/flink.php?dopost=save with an empty validate code, leading to execution of arbitrary PHP and system commands. The NVD description notes that the Shadowserver Foundation first observed exploitation evidence on 2023-10-14, and the flaw is rated CVSS 9.8 (CRITICAL).

NVD description

DedeCMS through 5.8.1-beta contains a PHP code injection vulnerability in ShowMsg() where the HTTP Referer header is written into a DedeTemplate string and included. Unauthenticated attackers can send a crafted Referer to /plus/flink.php?dopost=save with an empty validate code to execute arbitrary PHP and system commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.

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