CVE-2025-49484: JS Jobs Plugin SQLi Vulnerability

CVE-2025-49484 Overview

CVE-2025-49484 is a SQL injection vulnerability [CWE-89] in the JS Jobs plugin versions 1.0.0 through 1.4.1 for Joomla. The flaw resides in the cvid parameter of the employee application feature. Authenticated low-privilege users can inject arbitrary SQL commands into backend database queries. Successful exploitation leads to disclosure, modification, or destruction of database contents. A public proof-of-concept is published on Exploit-DB (entry #52373), increasing the likelihood of opportunistic attacks against exposed Joomla sites.

Critical Impact
Authenticated attackers with low privileges can execute arbitrary SQL queries against the Joomla database, compromising confidentiality, integrity, and availability of stored data.

Affected Products

JS Jobs plugin for Joomla, version 1.0.0
JS Jobs plugin for Joomla, versions 1.1.0 through 1.4.0
JS Jobs plugin for Joomla, version 1.4.1

Discovery Timeline

2025-07-18 - CVE-2025-49484 published to the National Vulnerability Database
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-49484

Vulnerability Analysis

The JS Jobs plugin exposes an employee application feature that accepts a cvid request parameter. The plugin concatenates this parameter directly into a SQL statement without parameterization or input validation. Any authenticated user with the minimum role required to access the application feature can manipulate the query. Attackers can extract account credentials, session tokens, and Joomla configuration secrets stored in the database. Because Joomla shares its database across components, exploitation extends beyond the JS Jobs tables into core CMS data.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands [CWE-89]. The cvid parameter is passed into a query string without prepared statements or escaping. The plugin does not enforce type validation that would restrict the parameter to a numeric identifier. This pattern enables both UNION-based and boolean-based SQL injection techniques.

Attack Vector

The attack vector is network-based and requires low privileges with no user interaction. An attacker authenticates to the Joomla site as any registered user, then submits a crafted HTTP request to the JS Jobs employee application endpoint. The injected payload in the cvid parameter is executed against the Joomla database. A working proof-of-concept exists in the GitHub PoC Repository and Exploit-DB #52373.

No verified exploit code is reproduced here. Refer to the published advisories for technical proof-of-concept details.

Detection Methods for CVE-2025-49484

Indicators of Compromise

Unusual HTTP requests targeting JS Jobs endpoints containing SQL meta-characters such as ', UNION, SELECT, or -- in the cvid parameter
Web server logs showing unexpected response sizes or HTTP 500 errors on the employee application feature
New or modified rows in the Joomla #__users table or unexpected administrator accounts
Outbound database queries from the Joomla application referencing information_schema

Detection Strategies

Inspect web server and application logs for requests to JS Jobs URLs where the cvid value contains non-numeric content
Deploy Web Application Firewall (WAF) signatures that flag SQL injection patterns in Joomla query strings
Correlate authentication events with database error logs to identify post-login probing of the JS Jobs endpoint

Monitoring Recommendations

Enable verbose query logging on the Joomla database during incident response to capture injected statements
Monitor for privilege changes within Joomla user tables and review session activity for accounts that accessed JS Jobs features
Track outbound connections from the Joomla server that could indicate data exfiltration following exploitation

How to Mitigate CVE-2025-49484

Immediate Actions Required

Upgrade the JS Jobs plugin to a version later than 1.4.1 once the vendor publishes a fix, as referenced on the Joomsky Security Resource
Restrict access to JS Jobs employee application endpoints to trusted user groups while a patch is being applied
Audit Joomla user accounts and reset credentials for any account that may have accessed the vulnerable endpoint

Patch Information

The vulnerability affects JS Jobs plugin versions 1.0.0 through 1.4.1. Administrators should consult the vendor at Joomsky for the latest fixed release and apply it through the Joomla extension manager. After patching, verify the plugin version in the Joomla administrator console.

Workarounds

Disable the JS Jobs plugin until a patched version is installed
Deploy WAF rules that block SQL injection signatures targeting the cvid parameter on JS Jobs URLs
Enforce least-privilege database accounts so the Joomla service user cannot read or modify sensitive tables beyond what the application requires

bash

# Example WAF rule (ModSecurity) blocking SQLi in the cvid parameter
SecRule ARGS:cvid "@rx (?i)(union(\s|/\*.*\*/)+select|select.+from|information_schema|sleep\(|benchmark\(|--|;)" \
    "id:1004949,phase:2,deny,status:403,log,msg:'CVE-2025-49484 JS Jobs SQLi attempt'"