CVE-2026-119477 in Photo Album Plus Plugin
Summary
by MITRE • 11/04/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jacob N. Breetvelt WP Photo Album Plus wp-photo-album-plus allows Stored XSS.This issue affects WP Photo Album Plus: from n/a through 9.3.05.003.
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Analysis
by VulDB Data Team • 11/04/2026
The identified security flaw represents a classic instance of Improper Neutralization of Input During Web Page Generation, commonly known as Cross-Site Scripting or XSS. Specifically, this vulnerability manifests as a Stored XSS within the WP Photo Album Plus plugin for WordPress, affecting versions ranging from initial releases up through version 9.3.05.003. Unlike reflected XSS attacks where malicious scripts are executed immediately via a crafted link, stored vulnerabilities persist on the target server because the injected payload is saved in databases or other storage mechanisms. In this context, an attacker can inject malicious JavaScript code into fields that handle user-generated content within the photo album interface. When other users subsequently view these albums through their web browsers, the browser interprets and executes the embedded script as if it were legitimate content from the trusted website domain.
From a technical perspective, the root cause lies in insufficient input validation and output encoding during the rendering of dynamic web pages. The application fails to properly sanitize special characters such as angle brackets, quotes, or ampersands before storing user-supplied data. Consequently, when this untrusted data is retrieved from storage and rendered back into HTML without appropriate escaping mechanisms like htmlspecialchars or equivalent context-aware encoding, the browser parses the injected script tags directly. This allows the execution of arbitrary JavaScript in the security context of the vulnerable site, granting the attacker significant capabilities to manipulate client-side behavior.
The operational impact of this vulnerability is severe due to its persistent nature and potential for widespread exposure. Since the malicious code is stored on the server, every user who accesses the affected photo album becomes a victim without needing to click a specific phishing link or interact with a specially crafted URL. This significantly increases the attack surface compared to reflected XSS. Attackers can exploit this flaw to steal session cookies, hijack administrative sessions if an administrator views the compromised content, deface websites by altering displayed images or text, redirect users to malicious sites hosting malware, or perform actions on behalf of authenticated users such as changing settings or deleting data. The persistence of the payload means that remediation requires not only patching the code but also manually cleaning any injected scripts from existing database records.
This vulnerability aligns with CWE-79, which categorizes improper neutralization of input during web page generation, and maps to MITRE ATT&CK technique T1059.005, specifically JavaScript execution under client-side scripting. The attack vector typically involves the attacker uploading a photo or adding metadata where script tags are embedded within file names, alt text fields, or description inputs that lack rigorous sanitization checks. Defense in depth strategies must be employed to mitigate such risks effectively.
To address this issue, immediate action is required by upgrading WP Photo Album Plus to a version newer than 9.3.05.003 where the input validation and output encoding mechanisms have been corrected. For organizations unable to upgrade immediately due to compatibility constraints, implementing Web Application Firewall rules can help detect and block requests containing common XSS payloads such as script tags or event handlers like onerror. Additionally, enforcing Content Security Policy headers that restrict inline script execution provides a critical layer of defense even if the underlying code flaw remains unpatched in legacy systems. Regular security audits focusing on input sanitization practices across all user-facing forms are essential to prevent similar vulnerabilities from being introduced during future development cycles.