What is the CVSS score of CVE-2026-28408?

CVE-2026-28408 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of PHP are affected by CVE-2026-28408?

WeGIA instances prior to version 3.6.5 contain a critical authentication bypass vulnerability affecting charitable institutions' web managers.

Is there a public PoC exploit available for CVE-2026-28408?

Yes, a public proof-of-concept exploit is available for CVE-2026-28408. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-28408?

Within 24 hours: Identify all WeGIA deployments and their versions; isolate affected systems from internet access if version <3.6.5. Within 7 days: Implement WAF rules to block direct requests to adicionar_tipo_docs_atendido.php; restrict network access to WeGIA administrative functions; conduct access logs review for exploitation evidence. Within 30 days: Contact vendor for patch availability timeline; evaluate migration to alternative solutions if patch remains unavailable; conduct full security audit of WeGIA deployments.

PHP CVE-2026-28408

CRITICAL

Improper Authentication (CWE-287)

2026-02-27 security-advisories@github.com

PHP Golang Wegia

9.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 03, 2026 - 18:22 vuln.today

Public exploit code

CVE Published

Feb 27, 2026 - 22:16 nvd

CRITICAL 9.8

DescriptionGitHub Advisory

WeGIA is a web manager for charitable institutions. Prior to version 3.6.5, the script in adicionar_tipo_docs_atendido.php does not go through the project's central controller and does not have its own authentication and permission checks. A malicious user could make a request through tools like Postman or the file's URL on the web to access features exclusive to employees. The vulnerability allows external parties to inject unauthorized data in massive quantities into the application server's storage. Version 3.6.5 fixes the issue.

AnalysisAI

Authentication bypass in WeGIA charitable institution management system before 3.6.5. The adicionar_tipo_docs_atendido.php script lacks authentication, allowing unauthorized access. PoC available.

Technical ContextAI

CWE-287 authentication bypass. The adicionar_tipo_docs_atendido.php script processes requests without verifying user authentication.

RemediationAI

Update WeGIA to 3.6.5 or later.

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CVE-2026-28408 vulnerability details – vuln.today

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PHP CVE-2026-28408

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

More in PHP

Same weakness CWE-287 – Improper Authentication

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External POC / Exploit Code