CVE-2026-57769 in Grand Photography Plugin
Summary
by MITRE • 07/23/2026
Unauthenticated Cross Site Scripting (XSS) in Grand Photography <= 5.7.8 versions.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability under discussion represents an unauthenticated cross site scripting flaw affecting Grand Photography plugin versions 5.7.8 and earlier. This security weakness allows malicious actors to inject arbitrary javascript code into the application's response without requiring any authentication credentials or privileged access. The vulnerability stems from insufficient input validation and output encoding mechanisms within the plugin's handling of user-supplied data, particularly in parameters that are directly reflected in the web page content without proper sanitization.
The technical implementation of this XSS vulnerability occurs when the plugin fails to adequately sanitize user inputs before rendering them in web responses. Attackers can exploit this by crafting malicious payloads that contain javascript code within parameters such as search fields, form inputs, or URL parameters. When these inputs are processed and displayed on the website without proper encoding, the injected scripts execute in the context of other users' browsers who visit the affected pages. This creates a persistent threat vector where compromised users become unwitting participants in executing malicious code intended for other system users.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking. Attackers can leverage this weakness to perform a variety of malicious activities including but not limited to stealing cookies, redirecting users to phishing sites, defacing the website content, or establishing persistent backdoors through more advanced attack vectors. The unauthenticated nature of the exploit means that any visitor to the website could potentially be compromised without requiring any special privileges or credentials. This makes the vulnerability particularly dangerous as it can be exploited by anyone with basic web browsing capabilities.
The exploitation of this XSS vulnerability aligns with several tactics described in the mitre ATT&CK framework under the initial access and execution phases, specifically targeting credential dumping and command and control communications. The vulnerability maps directly to CWE-79 which defines Cross Site Scripting as a weakness that allows attackers to inject malicious scripts into web applications viewed by other users. This particular implementation represents a classic reflected XSS attack pattern where the malicious payload is delivered via URL parameters or form submissions and executed immediately upon page load.
Organizations should prioritize immediate mitigation through plugin updates to versions 5.7.9 or later where the vulnerability has been patched. Additionally, implementing proper input validation and output encoding mechanisms can serve as effective defensive measures. Web application firewalls should be configured to detect and block suspicious script patterns in URL parameters and form inputs. Regular security audits of third-party plugins and continuous monitoring for similar vulnerabilities across the entire web application stack are essential practices for maintaining robust security posture against such threats.