CVE-2025-49467: JEvents Joomla Component SQLi Vulnerability

CVE-2025-49467 Overview

CVE-2025-49467 is a SQL injection vulnerability [CWE-89] affecting the JEvents component for Joomla. The flaw exists in versions before 3.6.88 and 3.6.82.1. Attackers can exploit publicly accessible actions that list events by date ranges to inject malicious SQL statements. No authentication or user interaction is required to trigger the vulnerability over the network.

The vulnerability allows attackers to manipulate database queries, potentially exposing sensitive data, modifying records, or compromising the underlying Joomla site. The high CVSS score reflects the network-accessible nature of the flaw and the impact on confidentiality, integrity, and availability of the affected database.

Critical Impact

Unauthenticated attackers can execute arbitrary SQL queries against the Joomla database through the JEvents date-range listing functionality, leading to data theft, modification, or full site compromise.

Affected Products

• JEvents component for Joomla versions before 3.6.88
• JEvents component for Joomla versions before 3.6.82.1
• Joomla sites with the JEvents extension installed and publicly accessible event listings

Discovery Timeline

• 2025-06-12 - CVE-2025-49467 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-49467

Vulnerability Analysis

The JEvents component provides event calendaring functionality for Joomla content management system (CMS) installations. The vulnerability resides in publicly accessible actions that filter and list events by date ranges. User-supplied date range parameters are concatenated into SQL queries without proper sanitization or parameterization.

Attackers can craft HTTP requests containing SQL syntax within the date range parameters. The injected payloads are executed by the underlying database engine with the privileges of the Joomla database user. This typically grants read and write access to all tables in the Joomla database, including user credentials, session tokens, and configuration data.

Because the affected actions are publicly accessible, exploitation does not require authentication. Attackers only need network access to the target Joomla site and knowledge of the vulnerable endpoint. The EPSS score of 0.224% indicates current exploitation probability remains low, but the absence of authentication requirements increases long-term risk.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands [CWE-89]. The JEvents component fails to validate or parameterize date-range input before incorporating it into SQL queries. This allows attacker-controlled strings to alter query structure rather than being treated as data values.

Attack Vector

An attacker sends a crafted HTTP GET or POST request to a public JEvents endpoint that accepts date range parameters. The injected SQL payload modifies the original query to extract data using UNION-based techniques, infer data via boolean or time-based blind injection, or modify records through stacked queries where supported. The vulnerability manifests in the JEvents query construction logic for date-range filtering. Refer to the JEvents Official Website for component documentation and update information.

Detection Methods for CVE-2025-49467

Indicators of Compromise

• HTTP requests to JEvents endpoints containing SQL keywords such as UNION, SELECT, SLEEP, or -- within date range parameters
• Unusual database error messages in Joomla logs referencing JEvents queries
• Anomalous outbound data transfer following requests to event listing URLs
• Unexpected new administrator accounts or modified user records in the #__users table

Detection Strategies

• Inspect web server access logs for malformed or suspicious date parameters submitted to JEvents listing URLs
• Deploy Web Application Firewall (WAF) rules to flag SQL injection patterns targeting Joomla extension endpoints
• Correlate database query logs with HTTP request logs to identify injected queries originating from JEvents actions
• Monitor for time-based blind injection by tracking abnormally long response times from event listing endpoints

Monitoring Recommendations

• Enable verbose query logging on the MySQL or MariaDB instance backing Joomla for the duration of triage
• Alert on multiple failed or malformed requests to JEvents endpoints from a single source IP
• Track integrity of Joomla administrator accounts and session tables for unauthorized modifications

How to Mitigate CVE-2025-49467

Immediate Actions Required

• Upgrade the JEvents component to version 3.6.88 or 3.6.82.1 or later immediately
• Audit Joomla user accounts and database contents for signs of unauthorized access or modification
• Rotate Joomla administrator credentials and database passwords if compromise is suspected
• Review web server and database logs for historical evidence of exploitation

Patch Information

Fixed versions are JEvents 3.6.88 and 3.6.82.1. Administrators should download and install the latest release from the JEvents Official Website. Verify the installed version through the Joomla extension manager after applying the update.

Workarounds

• Restrict access to JEvents event listing URLs via web server access control rules until patching is complete
• Deploy WAF signatures that block SQL injection payloads targeting Joomla extension parameters
• Temporarily disable the JEvents component in the Joomla extension manager if patching cannot be performed immediately

# Configuration example: example WAF rule to block common SQL injection patterns
# targeting JEvents date-range parameters (adapt to your WAF syntax)
SecRule REQUEST_URI "@contains /component/jevents/" \
  "chain,deny,status:403,id:1004949,msg:'Potential SQLi in JEvents'"
  SecRule ARGS "@rx (?i)(union[\s]+select|sleep\(|--|;--|/\*)" "t:none"