CVE-2026-107768 in TranslatePress Plugin
Summary
by MITRE • 10/16/2026
The TranslatePress – Translate Multilingual sites with AI Translation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 3.3.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the target site to allow unmoderated comment submission on at least one post and to have a secondary language configured — both conditions reflect TranslatePress's primary use case.
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Analysis
by VulDB Data Team • 10/16/2026
The vulnerability identified within the TranslatePress plugin for WordPress, specifically affecting versions up to 3.3.7, represents a critical security flaw classified as Stored Cross-Site Scripting (XSS). This type of attack is particularly dangerous because it involves injecting malicious scripts into web pages that are then stored on the target server and served to other users upon request. In this specific instance, the injection vector is located within the comment parameter utilized by the plugin's translation functionality. The root cause lies in insufficient input sanitization and a lack of proper output escaping mechanisms when handling data submitted through comments. This technical deficiency allows unauthenticated attackers to embed arbitrary JavaScript code into the database entries associated with translated content. When an administrator or any other user views the affected page, the malicious script executes within their browser session, potentially leading to severe security compromises such as session hijacking, credential theft, defacement of the website, or redirection to phishing sites.
From a classification perspective, this vulnerability aligns directly with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific nature of storing the payload in the database before execution categorizes it further under Stored XSS, where the impact is amplified because the malicious code persists and affects multiple victims rather than just a single user interacting with a crafted link. In terms of adversary tactics, this exploitation technique maps to MITRE ATT&CK techniques related to Client-side Injection and potentially Account Manipulation if used for persistent access or data exfiltration. The fact that the vulnerability exists in all versions up to 3.3.7 indicates a long-standing issue within the codebase's handling of multilingual content, highlighting systemic gaps in security validation during the development lifecycle.
The operational impact of this vulnerability is significant due to its reliance on common configuration settings for WordPress sites using TranslatePress. Exploitation requires two primary conditions: the target site must allow unmoderated comment submission on at least one post, and it must have a secondary language configured. These conditions are not obscure edge cases but rather reflect the core use case of the plugin itself. Consequently, any website utilizing this tool for multilingual support with open comments is inherently vulnerable to attack without additional hardening measures. An attacker can craft a malicious comment containing JavaScript code that exploits the browser's execution context when the translated page is rendered. This leads to unauthorized actions being performed on behalf of the victim user who views the compromised page, potentially allowing the attacker to take over administrative accounts if cookies or session tokens are stolen and used in subsequent requests.
Mitigation strategies must address both immediate remediation and long-term security posture improvements. The most effective solution is to upgrade the TranslatePress plugin to a version newer than 3.3.7 where these input sanitization and output escaping issues have been resolved by the developers. For sites that cannot immediately update, administrators should enforce moderation on all comments to prevent unverified content from being stored in the database. Additionally, implementing Content Security Policy headers can help mitigate the impact of XSS attacks by restricting the sources from which scripts are allowed to execute. Regular security audits and code reviews focusing on input validation for multilingual plugins are also recommended to ensure that future updates do not reintroduce similar vulnerabilities. Maintaining strict control over user-generated content inputs is essential in preserving the integrity and confidentiality of web applications relying on dynamic translation features.