CVE-2025-27271 is a reflected Cross-site Scripting (XSS) vulnerability identified in the Alberto Cocchiara DB Tables Import/Export plugin, specifically affecting versions up to and including 1.0.1. This vulnerability stems from improper neutralization of input during web page generation, meaning that user-supplied data is not correctly sanitized or encoded before being included in the HTML output. As a result, an attacker can craft a malicious URL or input that, when visited or submitted by a victim, causes arbitrary JavaScript code to execute within the victim's browser session. This type of reflected XSS is typically exploited by tricking users into clicking on malicious links, which then execute scripts that can steal cookies, session tokens, or perform actions on behalf of the user without their consent. The vulnerability does not require the attacker to have any prior authentication, increasing its risk profile. Although no public exploits have been reported yet, the presence of this flaw in a plugin used for database table import/export operations could be leveraged to target administrators or users with elevated privileges. The lack of a CVSS score indicates that the vulnerability is newly disclosed, and no official patch or mitigation guidance has been released by the vendor at the time of publication. The vulnerability was reserved on February 21, 2025, and published on March 3, 2025, by Patchstack. Given the plugin’s role in managing database tables, exploitation could lead to significant security consequences if combined with other vulnerabilities or poor security practices.

The primary impact of CVE-2025-27271 is the compromise of user confidentiality and integrity through the execution of arbitrary scripts in the context of a victim’s browser. This can lead to session hijacking, theft of sensitive information such as cookies or credentials, and unauthorized actions performed with the victim’s privileges. For organizations, this could result in unauthorized data access, privilege escalation, or disruption of administrative functions related to database management. Since the vulnerability is reflected XSS, it requires user interaction, which somewhat limits its scope but does not eliminate risk, especially in environments with high user interaction or where phishing attacks are common. The absence of a patch increases the window of exposure. Attackers could target administrators or users with elevated permissions to gain further access or disrupt operations. The vulnerability affects all deployments using the vulnerable plugin version, potentially impacting a wide range of organizations that rely on this tool for database import/export tasks, including web hosting providers, development agencies, and enterprises using PHP-based CMS platforms.

1. Immediately restrict access to the DB Tables Import/Export plugin interface to trusted users only, preferably behind additional authentication or network controls. 2. Implement strict input validation and output encoding on all user-supplied data within the plugin’s web pages to neutralize malicious scripts. 3. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 4. Monitor web server logs and application logs for suspicious requests that may indicate attempted exploitation of reflected XSS. 5. Educate users and administrators about the risks of clicking on untrusted links, especially those related to database management interfaces. 6. Regularly check for vendor updates or patches addressing this vulnerability and apply them promptly once available. 7. Consider temporarily disabling or replacing the plugin with alternative tools that do not exhibit this vulnerability until a fix is released. 8. Use web application firewalls (WAFs) configured to detect and block reflected XSS attack patterns targeting the affected plugin endpoints.