CVE-2026-5414 Overview
A security flaw has been discovered in Newgen OmniDocs up to version 12.0.00. This vulnerability affects the /omnidocs/WebApiRequestRedirection endpoint, where improper control of resource identifiers allows attackers to manipulate the DocumentId parameter. This type of vulnerability (CWE-99: Improper Control of Resource Identifiers) enables attackers to potentially access or manipulate resources outside their authorized scope by crafting malicious requests.
Critical Impact
Remote attackers can exploit this vulnerability without authentication to manipulate resource identifiers, potentially leading to unauthorized access to documents or system resources managed by OmniDocs.
Affected Products
- Newgen OmniDocs up to version 12.0.00
- OmniDocs WebApiRequestRedirection component
- Affected endpoint: /omnidocs/WebApiRequestRedirection
Discovery Timeline
- April 2, 2026 - CVE-2026-5414 published to NVD
- April 2, 2026 - Last updated in NVD database
Technical Details for CVE-2026-5414
Vulnerability Analysis
This vulnerability represents an Improper Control of Resource Identifiers (CWE-99) weakness in Newgen OmniDocs document management system. The flaw exists in the WebApiRequestRedirection component, which fails to properly validate or sanitize the DocumentId parameter before using it to access or reference system resources.
When a web application uses user-supplied input to construct resource identifiers without adequate validation, attackers can manipulate these identifiers to reference resources they should not have access to. In the context of a document management system like OmniDocs, this could allow unauthorized access to confidential documents, modification of document references, or enumeration of document identifiers.
The vulnerability can be exploited remotely over the network without requiring any authentication or user interaction, making it accessible to unauthenticated attackers who can reach the vulnerable endpoint.
Root Cause
The root cause stems from insufficient input validation in the /omnidocs/WebApiRequestRedirection endpoint. The application directly processes the DocumentId parameter without properly verifying that the supplied identifier references a resource the requesting user is authorized to access. This lack of input validation allows attackers to supply arbitrary resource identifiers that may resolve to unintended documents or system resources.
Attack Vector
The attack is network-based and can be performed remotely against any exposed OmniDocs installation. An attacker would craft HTTP requests to the /omnidocs/WebApiRequestRedirection endpoint with manipulated DocumentId parameter values. By systematically modifying this parameter, attackers could potentially enumerate valid document identifiers, access documents belonging to other users, or redirect requests to unintended resources.
The exploit has been publicly disclosed, and proof-of-concept materials have been released. The vendor was contacted about this vulnerability but did not respond. Technical details are available through the VulDB vulnerability entry.
Detection Methods for CVE-2026-5414
Indicators of Compromise
- Unusual HTTP requests to /omnidocs/WebApiRequestRedirection with sequential or enumerated DocumentId values
- Access attempts to documents outside the requesting user's authorized scope
- High volume of requests to the vulnerable endpoint from a single source
- Error responses indicating invalid or unauthorized document access attempts
Detection Strategies
- Monitor web server access logs for requests to /omnidocs/WebApiRequestRedirection with unusual patterns in the DocumentId parameter
- Implement web application firewall (WAF) rules to detect potential resource identifier manipulation attempts
- Deploy anomaly detection to identify unusual access patterns to the document management system
- Enable detailed logging on the OmniDocs application to track document access requests
Monitoring Recommendations
- Configure alerting for high-frequency requests to the WebApiRequestRedirection endpoint
- Monitor for authentication bypass attempts or unauthorized document retrievals
- Implement rate limiting on the affected endpoint to slow enumeration attacks
- Review access logs regularly for signs of document identifier enumeration
How to Mitigate CVE-2026-5414
Immediate Actions Required
- Restrict network access to the /omnidocs/WebApiRequestRedirection endpoint using firewall rules or access control lists
- Implement a web application firewall (WAF) with rules to validate and sanitize the DocumentId parameter
- Enable detailed logging and monitoring on the affected endpoint
- Review and restrict user permissions within OmniDocs to minimize potential impact
Patch Information
At the time of publication, no official patch has been released by Newgen. The vendor was contacted early about this disclosure but did not respond in any way. Organizations should monitor the VulDB entry and vendor communications for updates on patch availability.
Workarounds
- Implement network-level restrictions to limit access to the OmniDocs application to trusted IP ranges only
- Deploy a reverse proxy or WAF in front of OmniDocs to filter and validate requests to the vulnerable endpoint
- Consider temporarily disabling the WebApiRequestRedirection functionality if it is not business-critical
- Implement additional authentication requirements for accessing the affected endpoint
# Example WAF rule to restrict access to the vulnerable endpoint
# Add to your web server or reverse proxy configuration
# Apache mod_rewrite example
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/omnidocs/WebApiRequestRedirection
RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.
RewriteRule ^ - [F,L]
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
