Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in halfdata Green Popups halfdata-green-popups allows Blind SQL Injection.This issue affects Green Popups: from n/a before 7.6.3.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.3",
  "pubDate": "2026-10-16T07:17:14.430Z",
  "pubdate": "2026-10-16T07:17:14.430Z",
  "executiveSummary": "The Green Popups plugin for WordPress contains an Improper Neutralization of Special Elements used in an SQL Command vulnerability, classified as a Blind SQL Injection.\nThe vulnerability resides in the halfdata-green-popups product affecting all versions prior to 7.6.3.\nThis security flaw allows an unauthenticated or authenticated attacker to perform unauthorized database operations by injecting malicious SQL statements into vulnerable parameters.\nThe impact of a successful exploitation is severe, as it enables an attacker to infer information from the database through boolean-based or time-based blind side-channel analysis.\nBy manipulating database queries, an attacker can extract sensitive information such as user credentials, configuration data, or private site content.\nThe risk implication is critical due to the potential for total data exposure and compromise of the underlying database integrity. Exploitation requires sending specially crafted requests that trigger the vulnerable code path without the need for prior administrative access.",
  "technicalDetails": "The vulnerability is identified as a Blind SQL Injection stemming from the improper sanitization and escaping of user-supplied input before it is incorporated into dynamic SQL queries within the Green Popups plugin.\nIn the context of Blind SQL Injection, the application does not return the results of the query directly in the HTTP response. Instead, the attacker leverages the application's response behavior—such as differences in page load times or variations in returned content based on logical conditions—to reconstruct the database contents character by character.\nThe root cause involves a failure to utilize prepared statements or parameterized queries when handling user-provided data. This allows an attacker to break out of the intended data context and append arbitrary SQL syntax, such as UNION operators, boolean inference conditions (e.g., AND 1=1), or time-delay functions (e.g., SLEEP()).\nThe attack flow begins with the attacker identifying a vulnerable input parameter within the plugin's frontend or backend interface. The attacker then submits a series of crafted HTTP requests containing SQL fragments. If the input is vulnerable, the backend database processes the injected malicious logic.\nBy observing how the application reflects the truth value of the injected condition—either by the presence/absence of certain elements or the time taken to generate the response—the attacker can perform automated data exfiltration.\nThe affected component is the halfdata-green-popups codebase, specifically targeting versions earlier than 7.6.3. Exploitation is facilitated via the network and does not necessarily require high-level administrative privileges, significantly expanding the attack surface.\nPost-exploitation impact includes the systematic extraction of the entire database structure and contents, potentially leading to unauthorized data harvesting. In environments where database user permissions are overly permissive, an attacker might escalate this vulnerability to further manipulate database records or potentially achieve remote code execution if the database configuration allows for file system interactions (e.g., INTO OUTFILE).\nThis flaw underscores the critical necessity of adhering to secure coding practices such as using the WordPress $wpdb->prepare() method for all database interactions to ensure that user input is correctly escaped and quoted, thereby neutralizing injection vectors."
}