CVE-2025-11952
📋 TL;DR
This stored XSS vulnerability in Oct8ne Chatbot v2.3 allows attackers to inject malicious JavaScript into email transcripts. When victims view these emails, the attacker can steal session cookies or perform actions as the user. All users running the vulnerable version are affected.
💻 Affected Systems
- Oct8ne Chatbot
📦 What is this software?
Chatbot by Oct8ne
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator session cookies, gains full control of the chatbot system, and potentially accesses underlying infrastructure.
Likely Case
Attacker steals user session cookies from email recipients, compromising individual accounts and potentially accessing sensitive chat data.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching victims.
🎯 Exploit Status
Requires ability to create transcripts that are sent via email; likely requires some level of access to the chatbot interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after v2.3
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-oct8ne-chatbot
Restart Required: No
Instructions:
1. Check current Oct8ne Chatbot version. 2. Upgrade to latest version. 3. Verify the /Records/SendSummaryMail endpoint properly sanitizes input.
🔧 Temporary Workarounds
Disable email transcript feature
allTemporarily disable the SendSummaryMail functionality until patched.
Implement WAF rules
allAdd web application firewall rules to block XSS payloads in transcript data.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent script execution
- Enable input validation and output encoding for all user-controlled data in email templates
🔍 How to Verify
Check if Vulnerable:
Test if JavaScript payloads in transcript data are executed when viewing email summaries.Check Version:
Check Oct8ne Chatbot admin panel or configuration files for version information.Verify Fix Applied:
Attempt to inject XSS payloads through transcript creation and verify they are properly sanitized in email output.📡 Detection & Monitoring
Log Indicators:
- Unusual transcript creation patterns
- JavaScript payloads in transcript data logs
Network Indicators:
- Malicious script tags in HTTP POST requests to /Records/SendSummaryMail
SIEM Query:
source="oct8ne_logs" AND (uri="/Records/SendSummaryMail" AND (data CONTAINS "<script>" OR data CONTAINS "javascript:"))