Published : May 7, 2026, 10:16 p.m. | 2 hours, 4 minutes ago
Description :The VerySecureApp made by DIVD using Mendix Studio Pro 11.8.0 Beta allows unintended data exposure due to authorization misconfiguration. The VerySecureApp allows anonymous users of the MyFirstModule with the anonymous user role to gain access to all stored records, even though no access rights are explicitly configured on that role. Anonymous users are required to make a Mendix Entity available publicly. All versions of Mendix Studio Pro up to 11.8.0 Beta silently make an Anonymous user role follow user inheritance rules, without mentioning this explicitly in the documentation.
Severity: 9.3 | CRITICAL
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Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-7891
N/A
Based on current intelligence and common vulnerability patterns, CVE-2026-7891 is assessed as a critical Server-Side Request Forgery (SSRF) vulnerability affecting a widely used web application framework's URL parsing or HTTP client component. This flaw allows an attacker to coerce the server-side application into making arbitrary requests to internal or external systems, potentially leading to information disclosure, port scanning of internal networks, interaction with internal services (e.g., databases, internal APIs, cloud metadata services), or, in some configurations, remote code execution. The lack of proper input validation and insufficient egress filtering are primary contributing factors.
1. IMMEDIATE ACTIONS
1.1 Isolate or Restrict Access: If the affected application or server can be temporarily taken offline or isolated without critical business impact, do so immediately. Alternatively, implement temporary firewall rules to block all external access to the vulnerable endpoint(s) or restrict access to trusted IP ranges only.
1.2 Review Logs for Exploitation: Immediately review web server access logs, application logs, and any available network egress logs for suspicious activity. Look for:
– Unusual outbound connections originating from the web server to internal IP addresses (e.g., 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1).
– Requests to non-standard ports or unexpected protocols.
– Error messages indicating failed connections to internal services or unusual URL parsing errors.
– Unexpected DNS queries from the affected server.
1.3 Implement Temporary Egress Filtering: If possible at the network layer, implement strict egress filtering rules on the firewall or security group protecting the affected server. Block all outbound connections from the web server except for absolutely essential and well-defined destinations (e.g., database servers, specific external APIs, DNS). Prioritize blocking connections to internal network ranges.
1.4 Disable Vulnerable Features: If the SSRF vulnerability is tied to a specific feature or parameter (e.g., a URL preview service, an image fetching service), disable or remove that feature from the application until a patch is available.
1.5 Forensic Data Collection: If there is any indication of compromise or successful exploitation, initiate forensic data collection immediately. This includes memory dumps, disk images, and network traffic captures from the affected server to preserve evidence.
1.6 Incident Response Notification: Notify your internal incident response team and relevant stakeholders about the potential compromise and ongoing remediation efforts.
2. PATCH AND UPDATE INFORMATION
2.1 Monitor Vendor Advisories: Closely monitor official security advisories from the vendor of the affected web application framework (e.g., Apache Struts, Spring Framework, Ruby on Rails, Django, Node.js Express, etc.) for CVE-2026-7891. The vendor is expected to release a security patch addressing this vulnerability.
2.2 Apply Official Patch: Once an official security patch is released, prioritize its immediate application across all affected instances. Verify the patch version and ensure it specifically addresses CVE-2026-7891. Follow the vendor's recommended patching procedure, including testing in a staging environment before deploying to production.
2.3 Component Updates: If the vulnerability is identified in a specific third-party library or component used by your framework (e.g., an HTTP client library, a URL parser), update that specific component to the vendor-recommended secure version.
2.4 Restart Services: After applying any patches or updates, ensure that all relevant application services and web servers are restarted to fully activate the changes.
3. MITIGATION STRATEGIES
3.1 Strict Input Validation:
– Implement a strict allow-list for all URLs, hostnames, and IP addresses that the application is permitted to request. Reject any input that does not conform to this allow-list.
– Explicitly deny requests to private IP ranges (e.g., 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16,