CVE-2026-82598
Received Received - Intake

Code Injection in SeaCMS Template Engine

Publication date: 2026-08-31

Last updated on: 2026-08-31

Assigner: VulDB

Description
A vulnerability was determined in SeaCMS up to 13.6. Affected is the function parseIf of the file search.php of the component Template Engine. This manipulation of the argument searchtype causes code injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

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Meta Information

Published
2026-08-31
Last Modified
2026-08-31
Generated
2026-08-31
AI Q&A
2026-08-31
EPSS Evaluated
N/A
NVD
CVE-2026-82598
EUVD
EUVD-2026-68301

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
seacms seacms to 13.6 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

This is a Remote Code Execution (RCE) vulnerability in SeaCMS version 13.6. It allows attackers to execute arbitrary PHP code remotely without authentication by manipulating the searchtype parameter in the search.php file. The flaw occurs in the Template Engine's parseIf function, where user input is inserted into template expressions and evaluated using PHP's eval().

Detection Guidance

Check SeaCMS version 13.6 for the vulnerable search.php file. Monitor HTTP requests to search.php with parameters like searchtype=5 and user-controlled inputs such as area or yuyan. Look for eval() usage in template parsing or unexpected command outputs in responses.

Impact Analysis

An attacker could gain full control over the affected SeaCMS server, execute system commands, access sensitive data, or use the server for further attacks. Since no authentication is required, any unpatched system is at immediate risk of compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's security rules. Organizations may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Upgrade SeaCMS to a patched version. Remove eval() from template parsing functions. Implement a safe expression parser instead of direct PHP evaluation. Avoid inserting user-controlled parameters into executable templates. Enforce strict allowlists for cascade filter parameters.

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