Which versions of PHP are affected by CVE-2026-5198?

CVE-2026-5198 is a critical authentication bypass vulnerability in code-projects Student Membership System 1.0 that allows unauthenticated attackers to gain administrative access through SQL…

Is there a public PoC exploit available for CVE-2026-5198?

Yes, a public proof-of-concept exploit is available for CVE-2026-5198. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-5198?

Within 24 hours: Identify all instances of code-projects Student Membership System 1.0 in your environment and isolate affected servers from untrusted networks; disable external admin login access if possible. Within 7 days: Implement WAF rules blocking SQL injection patterns targeting /admin/index.php, enforce strict input validation on username/password fields, and apply rate-limiting to authentication endpoints. Within 30 days: Migrate to an alternative system or contact vendor for patched version; conduct forensic review of admin access logs for unauthorized authentication attempts dating back 90 days.

PHP CVE-2026-5198

Q: What is the CVSS score of CVE-2026-5198?

CVE-2026-5198 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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. EPSS exploitation probability: 0.0%.

EUVD-2026-17399 MEDIUM

SQL Injection (CWE-89)

2026-03-31 VulDB

GHSA-x4c5-rphc-gh8c

SQLi PHP

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

PoC Detected

Apr 01, 2026 - 14:24 vuln.today

Public exploit code

EUVD ID Assigned

Mar 31, 2026 - 11:30 euvd

EUVD-2026-17399

Analysis Generated

Mar 31, 2026 - 11:30 vuln.today

CVE Published

Mar 31, 2026 - 11:00 nvd

MEDIUM 6.9

DescriptionCVE.org

A vulnerability was determined in code-projects Student Membership System 1.0. The impacted element is an unknown function of the file /admin/index.php of the component Admin Login. This manipulation of the argument username/password causes sql injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

SQL injection in code-projects Student Membership System 1.0 admin login allows unauthenticated remote attackers to bypass authentication and access sensitive data via crafted username/password parameters at /admin/index.php. Publicly available exploit code exists (VulDB 354296, GitHub POC), enabling trivial exploitation with no attack complexity. …

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Vulnerability AssessmentAI

Risk Assessment	Real-world risk is elevated despite moderate CVSS 7.3 scoring. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An external attacker scans public IP ranges for exposed instances of Student Membership System, identifying the /admin/index.php login page through HTTP fingerprinting or Google dorking. Using the publicly available GitHub POC exploit, the attacker submits a crafted POST request with SQL injection payload in the username field (e.g., admin' OR '1'='1'-- -) and arbitrary password. …
Remediation	No vendor-released patch identified at time of analysis for code-projects Student Membership System 1.0. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all instances of code-projects Student Membership System 1.0 in your environment and isolate affected servers from untrusted networks; disable external admin login access if possible. …

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

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CVE-2026-5198 vulnerability details – vuln.today

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PHP CVE-2026-5198

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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External POC / Exploit Code