CVE-2026-56036
Deferred Deferred - Pending Action
Unauthenticated SQL Injection in 워드프레스 결제 심플페이

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: Patchstack

Description
Unauthenticated SQL Injection in 워드프레스 결제 심플페이 <= 5.5.6 versions.
CVSS Scores
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-26
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2026-56036
EUVD
EUVD-2026-39699
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
결제_심플페이 결제_심플페이 to 5.5.6 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
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Executive Summary

CVE-2026-56036 is an unauthenticated SQL Injection vulnerability found in the WordPress plugin "결제 심플페이" (Payment Simple Pay) versions 5.5.6 and below.

This flaw allows attackers who do not need to be logged in to directly interact with the website's database by injecting malicious SQL commands.

Such interaction can lead to unauthorized access to sensitive data stored in the database.

Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive information stored in your website's database.

Because the vulnerability is unauthenticated and has a high CVSS score of 9.3, it is highly likely to be exploited in mass attacks.

Potential impacts include data theft, data exposure, and possible disruption of website availability.

Mitigation Strategies

To mitigate the CVE-2026-56036 vulnerability in the WordPress plugin 결제 심플페이 versions 5.5.6 and below, users should immediately update the plugin to version 5.5.7 or later.

Alternatively, users can apply mitigation measures such as using Patchstack's auto-update feature or implementing vulnerability blocking rules to prevent exploitation.

Compliance Impact

The vulnerability allows unauthenticated attackers to perform SQL Injection attacks, potentially stealing sensitive information from the website's database.

Such unauthorized access and data theft can lead to violations of data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive data against unauthorized access.

Therefore, exploitation of this vulnerability could result in non-compliance with these common standards and regulations due to compromised data confidentiality.

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