What is the CVSS score of CVE-2026-28411?

CVE-2026-28411 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: 0.7%.

Which versions of PHP are affected by CVE-2026-28411?

A critical vulnerability in WeGIA (charitable institution web manager) allows unauthenticated attackers to manipulate application logic by exploiting unsafe PHP variable handling, potentially leading…

Is there a public PoC exploit available for CVE-2026-28411?

Yes, a public proof-of-concept exploit is available for CVE-2026-28411. Prioritise patching immediately. EPSS: 0.7%.

How to fix or mitigate CVE-2026-28411?

Within 24 hours: Identify all WeGIA instances and their versions; isolate affected systems from production if possible and assess active usage. Within 7 days: Implement WAF rules blocking malicious REQUEST parameters; restrict network access to WeGIA to trusted IPs only; monitor logs for exploitation attempts. Within 30 days: Contact vendor for patch availability timeline; evaluate alternative solutions or plan controlled upgrade to version 3.6.5 when available; conduct security audit of affected systems.

PHP CVE-2026-28411

CRITICAL

Authentication Bypass Using an Alternate Path or Channel (CWE-288)

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

PHP Authentication Bypass 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 - 17:56 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, an unsafe use of the extract() function on the $_REQUEST superglobal allows an unauthenticated attacker to overwrite local variables in multiple PHP scripts. This vulnerability can be leveraged to completely bypass authentication checks, allowing unauthorized access to administrative and protected areas of the WeGIA application. Version 3.6.5 fixes the issue.

AnalysisAI

Authentication bypass via unsafe extract() function in WeGIA before 3.6.5. The extract() call on user-controlled data allows overwriting authentication variables. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send crafted HTTP request with malicious $_REQUEST parameters

Exploit

extract() function overwrites local variables

Execution

Bypass authentication checks

Impact

Access administrative functions

Access

Send crafted HTTP request with malicious $_REQUEST parameters

Exploit

extract() function overwrites local variables

Execution

Bypass authentication checks

Impact

Access administrative functions

Vulnerability AssessmentAI

Exploitation	WeGIA versions prior to 3.6.5 with unsafe extract() function processing $_REQUEST superglobal. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 9.8, EPSS 0.7%. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Attacker sends POST data that overwrites session/auth variables through extract(), gaining authenticated access without valid credentials.
Remediation	Update to WeGIA 3.6.5. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all WeGIA instances and their versions; isolate affected systems from production if possible and assess active usage. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-28411 vulnerability details – vuln.today

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PHP CVE-2026-28411

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

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External POC / Exploit Code