phpVMS Critical Vulnerability (CVE-2026-42569) Allows Unauthenticated Access
The National Vulnerability Database has detailed CVE-2026-42569, a critical vulnerability in phpVMS, a PHP application used for airline simulation. Prior to version 7.0.6, phpVMS was susceptible to unauthenticated access to a legacy import feature, earning a CVSS score of 9.4 (CRITICAL). This exposure could lead to significant compromise without requiring any prior authentication.
This flaw, categorized under CWE-284 (Improper Access Control), CWE-306 (Missing Authentication for Critical Function), and CWE-862 (Missing Authorization), highlights a fundamental breakdown in security architecture. An attacker’s calculus here is simple: find an exposed phpVMS instance, exploit this unauthenticated entry point, and potentially gain control over critical application functions. The National Vulnerability Database confirms this issue has been patched in version 7.0.6.
For defenders, this is a stark reminder of the risks posed by legacy features and insufficient access controls. Applications, especially those with critical data or operational roles, must rigorously enforce authentication and authorization across all modules, regardless of perceived importance or age. Legacy components are often the weakest link.
What This Means For You
- If your organization uses phpVMS, verify immediately that all instances are updated to version 7.0.6 or later. Audit your web application logs for any suspicious access to import functionalities prior to patching, as this vulnerability allows unauthenticated access.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-42569 - phpVMS Unauthenticated Access to Legacy Import Feature
title: CVE-2026-42569 - phpVMS Unauthenticated Access to Legacy Import Feature
id: scw-2026-05-09-ai-1
status: experimental
level: critical
description: |
This rule detects attempts to access the legacy import feature in phpVMS, which is vulnerable in versions prior to 7.0.6. The vulnerability allows unauthenticated users to exploit this feature, leading to potential unauthorized data manipulation or system compromise. The specific URI path and query parameter are indicative of the exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-09
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42569/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/phpvms/import'
cs-method:
- 'POST'
cs-uri-query|contains:
- 'legacy=true'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42569 | Auth Bypass | phpVMS prior to version 7.0.6 |
| CVE-2026-42569 | Auth Bypass | unauthenticated access to a legacy import feature |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 09, 2026 at 23:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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