CVE-2026-3054
📋 TL;DR
A cross-site scripting (XSS) vulnerability in Alinto SOGo versions 5.12.3 and 5.12.4 allows remote attackers to inject malicious scripts via the 'hint' argument. This affects organizations using these specific SOGo versions for groupware/collaboration services. Attackers can execute arbitrary JavaScript in victims' browsers when they interact with manipulated content.
💻 Affected Systems
- Alinto SOGo
📦 What is this software?
Sogo by Alinto
Sogo by Alinto
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal session cookies, credentials, or sensitive data from authenticated users, potentially leading to account takeover and data breaches.
Likely Case
Attackers perform session hijacking, deface web interfaces, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, the attack is prevented, though the vulnerable code remains present.
🎯 Exploit Status
Exploit is publicly available and can be initiated remotely without authentication, making it easy for attackers to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided
Restart Required: No
Instructions:
No official patch available. Monitor vendor channels for updates. Consider workarounds or upgrading to a newer version if available.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize the 'hint' parameter, removing or encoding special characters.
# Example for Apache mod_security: SecRule ARGS:hint "@rx <script>" "id:1001,deny,status:400"
Web Application Firewall (WAF)
allDeploy a WAF with XSS protection rules to block malicious requests containing script tags in the 'hint' parameter.
# Configure WAF to filter requests with suspicious patterns in query parameters
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to mitigate script execution.
- Disable or restrict access to vulnerable SOGo instances from untrusted networks.
🔍 How to Verify
Check if Vulnerable:
Check SOGo version via web interface or configuration files. If version is 5.12.3 or 5.12.4, it is vulnerable.Check Version:
sogo-tool version | grep VersionVerify Fix Applied:
Test by attempting to inject a script payload into the 'hint' parameter and verify it is sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- HTTP requests with 'hint' parameter containing script tags or JavaScript code
- Unusual error responses from SOGo web components
Network Indicators:
- Inbound traffic with encoded script payloads in query strings
- Outbound connections to suspicious domains triggered by XSS
SIEM Query:
source="sogo.log" AND (hint="*<script>*" OR hint="*javascript:*")