PT-2026-121345

CVE-2021-48016

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Published

2026-10-22

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Updated

2026-10-22

Description by

CVSS 3.1
9.8
Critical
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
Weakness enumeration
CWE-94: Improper Control of Generation of Code (\'Code Injection\')
Related identifiers
CVE-2021-48016
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