Network-AI InputSanitizer Path Traversal Vulnerability (CVE-2026-120313) Technical Analysis and Mitigation Guide
Executive & SecOps Summary
SECOPS ASSESSMENTNetwork-AI versions prior to 5.15.5
Attackers can bypass input validation to read, list, or write files in sibling directories outside the intended sandbox
Immediately upgrade Network-AI to version 5.15.5 or later
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
The recommended remediation is to upgrade the Network-AI package to version 5.15.5 or higher, where the path validation logic has been securely patched.
# If using npm
npm install network-ai@5.15.5
# If using yarn
yarn upgrade network-ai@5.15.52. Temporary Workaround & Hardening Configuration
If an immediate upgrade is not feasible, implement a temporary workaround at the reverse proxy or WAF level to block requests containing suspicious sibling directory patterns, or apply a custom validation wrapper in your application code.
# Nginx configuration to block potential sibling directory traversal attempts
server {
listen 80;
server_name your-app.com;
location / {
# Block requests attempting to access sibling directories sharing the base prefix
if ($request_uri ~* '\.\./|//|app-data[^/]') {
return 403 'Access Denied: Invalid Path Request';
}
proxy_pass http://localhost:3000;
}
}3. Log Audit & IoC Verification Commands
Use the following commands to check the installed version of Network-AI and audit application logs for potential exploitation attempts.
# 1. Verify the installed version of Network-AI
npm list network-ai
# 2. Scan application access logs for suspicious sibling directory access patterns
# (e.g., searching for 'app-data-' or 'app-data_/' when the base directory is 'app-data')
grep -rE 'app-data[^/]+' /var/log/nginx/access.log /var/log/node-app/*.log 2>/dev/nullBlock Exploits Instantly with Managed Virtual Patching Rules
Can't patch production immediately? Deploy managed WAF rules at the edge to intercept RCE, SQLi, and deserialization payloads before they hit your origin server.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2026-120313) exists in the InputSanitizer.sanitizePath() method of the Network-AI framework. The root cause is an insecure path validation mechanism that relies on an unanchored startsWith() check to verify if a given path resides within the designated base directory. Because the validation logic does not append a trailing directory separator (e.g., / or \) to the base path before performing the prefix check, it fails to properly isolate the sandbox. This allows paths that share a string prefix with the base directory name to bypass the security check.
2. Exploitation Mechanics & Attack Scenario
An attacker can exploit this vulnerability by supplying a path directed at a sibling directory that shares the same prefix as the authorized base directory. For example, if the configured base directory is /var/www/app-data, the startsWith() check only verifies if the input path begins with that exact string. An attacker can input a path like /var/www/app-data-secrets/config.json. Since /var/www/app-data-secrets starts with /var/www/app-data, the sanitizer validates the path as safe, allowing the attacker to escape the sandbox and access files in the sibling directory without using traditional directory traversal sequences like ../.
3. Infrastructure & Business Impact
With a CVSS score of 7.5 (High), this vulnerability poses a significant threat to application security. It can be exploited remotely without authentication. Successful exploitation allows unauthorized read, list, or write access to files outside the sandbox. This could lead to the exposure of sensitive configuration files, database credentials, and proprietary source code, or even enable arbitrary file write operations, potentially leading to Remote Code Execution (RCE) if the attacker can overwrite executable scripts or configuration files.
Official Vendor Advisories & References
Network-AI before 5.15.5 contains a path traversal vulnerability in InputSanitizer.sanitizePath() that allows attackers to escape the base directory using sibling-directory paths. Attackers can supply paths whose directory name shares a string prefix with the base, bypassing the unanchored startsWith check to read, list, or write files outside the sandbox.
Frequently Asked SecOps Questions (CVE-2026-120313)
FAQQ1. How critical is CVE-2026-120313 and is it actively exploited in the wild?
CVE-2026-120313 is rated CVSS 7.5 (HIGH) with a 30-day EPSS exploitation probability of 0.5%. Organizations running affected versions should prioritize patching based on network exposure.
Q2. Which vendors and products are affected by CVE-2026-120313?
Primary impacted vendors include jovancoding across network-ai. Scope summary: All versions of Network-AI prior to 5.15.5
Q3. What temporary mitigations or workarounds exist for CVE-2026-120313 before patching?
[Mitigation] Immediately upgrade Network-AI to version 5.15.5 or later Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2026-120313
Instantly format this advisory into an executive CISO summary or engineering patch ticket.
🔗 Related Advisories in Similar Stack (jovancoding)
View Category →Network-AI AgentVCR Path Traversal Vulnerability Leading to Arbitrary File Read/Write (CVE-2026-120312)
[Affected Scope] Network-AI versions from 5.13.4 before 5.15.5
Network-AI FileJobStore Path Traversal Vulnerability Analysis and Mitigation Guide (CVE-2026-120311)
[Affected Scope] Network-AI versions from 5.13.4 before 5.15.5
Adobe ColdFusion Path Traversal Remote Code Execution Vulnerability Urgent Advisory (CVE-2026-48282)
[Affected Scope] Adobe ColdFusion versions 2025.9, 2023.20 and earlier
WebDyne Perl Framework Path Traversal and Remote Code Execution (RCE) Vulnerability Advisory (CVE-2026-78189)
[Affected Scope] Perl web applications utilizing WebDyne versions 3.007 through 3.021
Subscribe to Daily Vulnerability Briefings & KEV Alerts
Concise morning briefings for SecOps, DevSecOps, and SRE teams covering newly exploited CVEs and mitigation priorities.