CVE-2025-70959
📋 TL;DR
A stored cross-site scripting vulnerability in Tendenci CMS allows attackers to inject malicious scripts into the Jobs module. When users view affected job listings, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. This affects all Tendenci CMS v15.3.7 installations with the Jobs module enabled.
💻 Affected Systems
- Tendenci CMS
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over the CMS administration panel, deface websites, or redirect users to malicious sites.
Likely Case
Attackers inject malicious scripts that steal user session cookies or credentials when users view job listings.
If Mitigated
With proper input validation and output encoding, malicious scripts would be rendered harmless as text rather than executable code.
🎯 Exploit Status
The GitHub reference shows proof-of-concept details. Exploitation requires ability to create or edit job postings.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Monitor Tendenci CMS security advisories for patch announcements. 2. Apply the official patch when available. 3. Test the patch in a development environment before production deployment.
🔧 Temporary Workarounds
Disable Jobs Module
allTemporarily disable the vulnerable Jobs module to prevent exploitation.
# Edit Tendenci configuration to disable Jobs module
# Specific commands depend on Tendenci deployment method
Implement WAF Rules
linuxConfigure web application firewall to block XSS payloads targeting the Jobs module endpoints.
# Example ModSecurity rule:
SecRule ARGS "<script" "id:1001,phase:2,deny,status:403,msg:'XSS Attack Detected'"
🧯 If You Can't Patch
- Implement strict input validation on all job posting form fields to reject HTML/script content
- Enable Content Security Policy (CSP) headers to restrict script execution sources
🔍 How to Verify
Check if Vulnerable:
Test if job postings accept and execute JavaScript payloads like <script>alert('XSS')</script> in job title or description fields.Check Version:
# Check Tendenci version in admin panel or via: grep -r "version" /path/to/tendenci/ | grep 15.3.7Verify Fix Applied:
After applying fixes, test that script payloads are properly sanitized and displayed as plain text rather than executing.📡 Detection & Monitoring
Log Indicators:
- Unusual job postings containing script tags or JavaScript code
- Multiple failed job submission attempts with script payloads
Network Indicators:
- HTTP POST requests to job submission endpoints containing script tags
- Outbound connections to suspicious domains from job viewing pages
SIEM Query:
source="web_logs" AND (uri_path="/jobs/" OR uri_path="/jobs/submit/") AND (request_body CONTAINS "<script" OR request_body CONTAINS "javascript:")