CVE-2018-25327: Joomla! Js Jobs Component CSRF Flaw

CVE-2018-25327 Overview

CVE-2018-25327 is a Cross-Site Request Forgery (CSRF) vulnerability in the Joomla! component JS Jobs version 1.2.0, developed by Joomsky. The component fails to validate anti-CSRF tokens on state-changing administrative endpoints. Attackers can craft malicious HTML forms targeting endpoints such as job.jobenforcedelete to delete job entries or alter component settings. Exploitation requires an authenticated administrator to visit an attacker-controlled page while logged into the Joomla! backend. The issue is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact
Authenticated administrators visiting a malicious page can be tricked into deleting job listings or modifying JS Jobs configuration without their consent.

Affected Products

Joomla! Extension JS Jobs version 1.2.0
Joomsky JS Jobs component for Joomla!
Joomla! sites with the vulnerable JS Jobs extension installed

Discovery Timeline

2026-05-17 - CVE-2018-25327 published to NVD
2026-05-18 - Last updated in NVD database

Technical Details for CVE-2018-25327

Vulnerability Analysis

The JS Jobs component exposes administrative actions through Joomla!'s standard index.php task dispatcher. Endpoints such as job.jobenforcedelete accept HTTP requests that mutate component state without verifying a per-session anti-CSRF token. Joomla! provides the JSession::checkToken() mechanism for exactly this purpose, but the affected component handlers do not invoke it. As a result, any cross-origin request originating from an authenticated administrator's browser is processed as a legitimate action.

Root Cause

The root cause is missing token validation in privileged task handlers within JS Jobs 1.2.0. Joomla!'s framework supplies JHtml::_('form.token') for emitting tokens and JSession::checkToken() for verifying them. The component's administrative controllers accept POST and GET requests for destructive operations without calling either API. The omission classifies the flaw as [CWE-352].

Attack Vector

An attacker hosts a page containing an auto-submitting HTML form or an img tag whose src references the vulnerable Joomla! endpoint. When an administrator with an active session loads the attacker's page, the browser issues the request with the administrator's session cookies attached. The server executes the action under the administrator's identity. Public proof-of-concept details are available via Exploit-DB #44492 and the VulnCheck Joomla CSRF Advisory.

No verified code examples are available. The vulnerability is described in prose; refer to the linked advisories for request structure and parameter details.

Detection Methods for CVE-2018-25327

Indicators of Compromise

Unexpected deletion of job entries managed by JS Jobs, particularly via the task=job.jobenforcedelete parameter in web server logs.
HTTP requests to index.php?option=com_jsjobs containing administrative tasks with Referer headers pointing to external or unknown domains.
Administrator session activity originating from off-hours browsing or unusual referrers immediately preceding configuration changes.

Detection Strategies

Inspect Joomla! access logs for state-changing JS Jobs tasks lacking same-origin Referer headers.
Correlate administrator login sessions with cross-origin POST or GET requests targeting com_jsjobs endpoints.
Deploy a Web Application Firewall (WAF) rule that blocks requests to JS Jobs administrative tasks without a valid Joomla! form token parameter.

Monitoring Recommendations

Enable Joomla! audit logging and forward events to a centralized log platform for review of administrative actions.
Alert on bulk deletions or configuration changes in the JS Jobs component within short time windows.
Monitor outbound Referer values on administrator sessions to detect cross-site triggered requests.

How to Mitigate CVE-2018-25327

Immediate Actions Required

Upgrade JS Jobs to a version later than 1.2.0 that includes CSRF token validation, as listed on the Joomla Extension JS Jobs directory.
Restrict administrative access to the Joomla! backend by IP allowlisting at the web server or WAF layer.
Require administrators to log out of Joomla! sessions when not actively performing administrative work.

Patch Information

Update JS Jobs through the Joomla! extension manager to the latest release published by Joomsky. Verify the vendor's release notes on the Joomsky Website and the Joomla Extension JS Jobs listing for fixed versions. Review the VulnCheck Joomla CSRF Advisory for additional remediation context.

Workarounds

Disable or uninstall the JS Jobs component until a patched version is deployed.
Configure a WAF rule that rejects requests to index.php?option=com_jsjobs administrative tasks unless they include a valid Joomla! session token parameter.
Use a browser isolation profile dedicated to Joomla! administration to prevent cross-site cookie reuse.

bash

# Example WAF rule (ModSecurity) blocking JS Jobs admin tasks without a token
SecRule REQUEST_URI "@contains option=com_jsjobs" \
    "chain,deny,status:403,id:1002501,\
     msg:'Missing Joomla CSRF token on JS Jobs admin task'"
    SecRule ARGS:task "@rx ^(job\.jobenforcedelete|.*delete|.*save)$" \
        "chain"
        SecRule &ARGS_NAMES "@eq 0" \
            "t:none"