CVE-2026-57407 in PDF Generator for WordPress Plugin
Summary
by MITRE • 07/13/2026
Server-Side Request Forgery (SSRF) vulnerability in WP Swings PDF Generator for WordPress pdf-generator-for-wp allows Server Side Request Forgery.This issue affects PDF Generator for WordPress: from n/a through <= 1.6.2.
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Analysis
by VulDB Data Team • 07/13/2026
Server-side request forgery vulnerabilities represent a critical class of security flaws that allow attackers to manipulate server-side applications into making unintended requests to internal or external systems. The WP Swings PDF Generator for WordPress plugin presents such a vulnerability where the pdf-generator-for-wp component fails to properly validate and sanitize user input before processing requests. This flaw falls under CWE-918 which specifically addresses server-side request forgery conditions where applications fail to adequately control access to resources that should be restricted.
The technical implementation of this vulnerability occurs when user-supplied parameters are directly incorporated into HTTP requests without proper validation or sanitization mechanisms. Attackers can exploit this weakness by crafting malicious input that forces the vulnerable WordPress plugin to initiate requests to internal network services or external malicious endpoints. The affected version range from n/a through 1.6.2 indicates that multiple iterations of the plugin contained this flaw, suggesting a persistent issue in the codebase that was not properly addressed until later versions.
The operational impact of this vulnerability extends beyond simple data exfiltration as it enables attackers to potentially access internal network resources that would normally be protected by firewall rules or network segmentation. An attacker could leverage this SSRF vulnerability to enumerate internal services, access sensitive information stored on internal servers, or even establish a pivot point for further attacks within the network infrastructure. The vulnerability creates a pathway for unauthorized access to systems that should remain isolated from external threats, effectively bypassing network security controls.
This specific weakness aligns with ATT&CK technique T1071.004 which covers application layer protocol communication and can be exploited as part of a broader attack chain leading to privilege escalation or data compromise. Organizations running vulnerable WordPress installations face significant risk as attackers can use this vulnerability to gain insights into internal network topology, potentially identifying other vulnerable systems or services that could serve as additional attack vectors.
Mitigation strategies should include immediate patching of the affected plugin to version 1.6.3 or later where the SSRF vulnerability has been addressed through proper input validation and sanitization mechanisms. Additionally, implementing network-level restrictions such as firewall rules that prevent internal server communication from external endpoints can provide defense-in-depth protection. Input validation should be implemented at multiple layers including client-side, application-level, and server-side controls to ensure comprehensive protection against similar vulnerabilities in the future. The remediation process should also include monitoring for suspicious requests and implementing proper logging mechanisms to detect potential exploitation attempts.