What is the CVSS score of EUVD-2025-21403?

EUVD-2025-21403 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of PHP are affected by EUVD-2025-21403?

Organizations using the editar_permissoes.php endpoint of the WeGIA application should be aware of moderate risk from CVE-2025-53824, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

Is there a public PoC exploit available for EUVD-2025-21403?

Yes, a public proof-of-concept exploit is available for EUVD-2025-21403. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate EUVD-2025-21403?

Within 30 days: Identify affected systems running the editar_permissoes.php endpoint of the WeGIA application and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

PHP EUVD-2025-21403

| CVE-2025-53824 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-07-14 security-advisories@github.com

PHP XSS Wegia

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

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

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

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

3.4.4

EUVD ID Assigned

Mar 16, 2026 - 09:43 euvd

EUVD-2025-21403

Analysis Generated

Mar 16, 2026 - 09:43 vuln.today

PoC Detected

Jul 15, 2025 - 20:15 vuln.today

Public exploit code

CVE Published

Jul 14, 2025 - 23:15 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

WeGIA is an open source web manager with a focus on the Portuguese language and charitable institutions. A Reflected Cross-Site Scripting (XSS) vulnerability was identified in the editar_permissoes.php endpoint of the WeGIA application prior to version 3.4.4. This vulnerability allows attackers to inject malicious scripts in the msg_c parameter. Version 3.4.4 fixes the issue.

Analysis

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

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EUVD-2025-21403 vulnerability details – vuln.today

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PHP EUVD-2025-21403

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code