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How the CVE Works
The vulnerability stems from the legacy import feature in phpVMS versions up to 7.0.5. Although this functionality was deprecated, parts of it remained unexpectedly accessible and operational within the application. An unauthenticated attacker could send crafted HTTP requests directly to the `/importer` API endpoints without needing any form of authentication or authorization. The system then executes internal processes that access and manipulate the application’s database and file structure. By leveraging these accessible legacy import functions, an attacker can trigger operations that lead to the deletion or corruption of critical application data. The vulnerability represents an authorization bypass (CWE-639) through an insecure direct object reference (IDOR) attack vector. The attack complexity is low, as it only requires sending crafted HTTP requests to the vulnerable `/importer` endpoints. The technical impact is severe, with a potential consequence of a full database wipe, as described in the official advisory. The vulnerability is fixed in version 7.0.6 and later, where the importer functionality has been either patched or completely removed from public access. For systems that cannot be updated immediately, a one-line fix is available which involves commenting out the vulnerable routes in the application’s configuration.
DailyCVE Form
Platform: phpVMS
Version: 7.x ≤ 7.0.5
Vulnerability: IDOR Authorization Bypass
Severity: Critical
Date: 2026-05-04
Prediction: Patch expected: v7.0.6 (2026-04-23)
What Undercode Say:
The technical analysis reveals that the root cause lies in a missing capability check on the `/importer` API routes within the Laravel-based application. To detect potential exploitation, system administrators should audit their access logs for any requests targeting the `/importer` endpoints that originate from unknown IP addresses or unexpected user agents. Below is a bash command to search for such indicators in Apache/Nginx access logs:
sudo grep -E "importer|/api/importer|import/legacy" /var/log/nginx/access.log | grep -E "(?:25[0-5]|2[0-4][0-9]|[bash]?[0-9][0-9]?).(?:25[0-5]|2[0-4][0-9]|[bash]?[0-9][0-9]?).(?:25[0-5]|2[0-4][0-9]|[bash]?[0-9][0-9]?).(?:25[0-5]|2[0-4][0-9]|[bash]?[0-9][0-9]?)"
Exploit:
A straightforward proof-of-concept (PoC) for this vulnerability involves sending an unauthenticated POST request to the `/importer` endpoint. An attacker could use the following `curl` command to attempt unauthorized data manipulation:
curl -X POST https://victim-phpvms-site.com/importer \
-H "Content-Type: application/json" \
-d '{"action":"import","data":"delete_all"}'
Impact:
The impact of this vulnerability is severe and can lead to a complete compromise of the application’s data integrity. An attacker can perform database write or delete operations, resulting in total data loss and permanent service disruption. Since no authentication is required, the attack surface is broad and exploitable from any location on the internet.
Protection from this CVE
Immediately update to phpVMS version 7.0.6 or later. If an immediate update is not possible, apply the one-line fix described in the official release notes by manually commenting out the route definitions for the importer feature. Additionally, network-level controls such as a Web Application Firewall (WAF) can be configured to block requests to the `/importer` path, and server access logs should be monitored for any anomalous activity targeting this endpoint.
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Sources:
Reported By: github.com
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