Skip to main content

PHP EUVDEUVD-2026-20884

| CVE-2026-34184 HIGH
Missing Authorization (CWE-862)
2026-04-09 CERT-PL GHSA-hh72-xj72-2c38
PHP Authentication Bypass
8.8
CVSS 4.0 · NVD
Share

Severity by source

NVD PRIMARY
8.8 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

7
Re-analysis Queued
Apr 20, 2026 - 17:07 vuln.today
cvss_changed
Analysis Updated
Apr 16, 2026 - 06:00 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
9.8.5
EUVD ID Assigned
Apr 09, 2026 - 10:00 euvd
EUVD-2026-20884
Analysis Generated
Apr 09, 2026 - 10:00 vuln.today
CVE Published
Apr 09, 2026 - 09:41 nvd
HIGH 8.8

DescriptionCVE.org

Hydrosystem Control System does not enforce authorization for some directories. This allows an unauthorized attacker to read all files in these directories and even execute some of them. Critically the attacker could run PHP scripts directly on the connected database.This issue was fixed in Hydrosystem Control System version 9.8.5

AnalysisAI

Unauthorized access to directories in Hydrosystem Control System versions prior to 9.8.5 allows unauthenticated remote attackers to read arbitrary files and execute PHP scripts directly against the connected database. Missing authorization enforcement on specific directories enables direct file access and code execution without authentication, creating critical exposure for database manipulation and data exfiltration. No public exploit identified at time of analysis.

Technical ContextAI

CWE-862 missing authorization vulnerability permits direct filesystem access to unprotected directories. CVSS vector PR:N confirms unauthenticated network-based exploitation. Vulnerability allows PHP script execution with database access privileges, bypassing application-layer access controls entirely through direct file requests.

RemediationAI

Vendor-released patch: Hydrosystem Control System version 9.8.5. Immediately upgrade all instances to version 9.8.5 or later to enforce proper directory-level authorization controls. Until patching is completed, implement network-level access restrictions to limit exposure exclusively to authenticated administrative networks using firewall rules or VPN requirements. Review web server configuration to explicitly deny direct access to PHP files outside designated application entry points. Conduct database access log review for unauthorized query activity. Reference vendor advisory at https://www.hydrosystem.poznan.pl/ and detailed analysis at https://cert.pl/posts/2026/04/CVE-2026-4901/ for implementation guidance.

More in PHP

View all
CVE-2012-1823 CRITICAL POC
9.8 May 11

sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
CVE-2016-1555 CRITICAL POC
9.8 Apr 21

(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear
CVE-2024-11680 CRITICAL POC
9.8 Nov 26

ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Rated critical severity (C
CVE-2025-49113 CRITICAL POC
9.9 Jun 02

Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au
CVE-2017-9841 CRITICAL POC
9.8 Jun 27

Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP c
CVE-2025-0108 HIGH POC
8.8 Feb 12

Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers

CVE-2021-25298 HIGH POC
8.8 Feb 15

Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
CVE-2021-25296 HIGH POC
8.8 Feb 15

Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
CVE-2013-4983 CRITICAL POC
10.0 Sep 10

The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows
CVE-2023-6553 CRITICAL POC
9.8 Dec 15

The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
CVE-2024-46506 CRITICAL POC
10.0 May 13

NetAlertX (formerly PiAlert) versions 23.01.14 through 24.x before 24.10.12 allow unauthenticated command injection thro
CVE-2024-8353 CRITICAL POC
9.8 Sep 28

The GiveWP - Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all

Same weakness CWE-862 – Missing Authorization

View all
CVE-2023-52163 HIGH POC
8.8
CVE-2025-6205 CRITICAL POC
9.1
CVE-2017-9232 CRITICAL POC
9.8
CVE-2023-6875 CRITICAL POC
9.8
CVE-2024-4898 CRITICAL POC
9.8
CVE-2023-32117 CRITICAL POC
9.8
CVE-2025-20362 MEDIUM POC
6.5
CVE-2020-36719 CRITICAL POC
9.8

Same technique Authentication Bypass

View all
CVE-2023-22515 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2012-1723 CRITICAL POC
9.8
CVE-2017-10271 HIGH POC
7.5
CVE-2015-1427 CRITICAL POC
9.8
CVE-2025-3248 CRITICAL POC
9.8

Share

EUVD-2026-20884 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy