Which versions of PHP are affected by CVE-2026-5645?

CVE-2026-5645 is a critical SQL injection vulnerability in projectworlds Car Rental System 1.0 that allows unauthenticated attackers to directly manipulate database queries through the payment…

Is there a public PoC exploit available for CVE-2026-5645?

Yes, a public proof-of-concept exploit is available for CVE-2026-5645. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-5645?

24 hours: Identify all instances of projectworlds Car Rental System 1.0 in production and isolate affected systems from public internet access or disable the /pay.php endpoint if business-critical functionality permits. 7 days: Implement Web Application Firewall (WAF) rules to block SQL injection patterns targeting the mpesa parameter; escalate to projectworlds for patch timeline and interim security guidance. 30 days: Develop migration plan to alternative car rental software with active security maintenance; if upgrade unavailable, implement input validation/parameterized queries at application level or conduct full code audit for similar injection vulnerabilities.

PHP CVE-2026-5645

Q: What is the CVSS score of CVE-2026-5645?

CVE-2026-5645 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-2026-19221 MEDIUM

SQL Injection (CWE-89)

2026-04-06 VulDB

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 07, 2026 - 13:20 vuln.today

Public exploit code

EUVD ID Assigned

Apr 06, 2026 - 10:45 euvd

EUVD-2026-19221

Analysis Generated

Apr 06, 2026 - 10:45 vuln.today

CVE Published

Apr 06, 2026 - 10:15 nvd

MEDIUM 6.9

DescriptionCVE.org

A weakness has been identified in projectworlds Car Rental System 1.0. Affected by this vulnerability is an unknown functionality of the file /pay.php of the component Parameter Handler. Executing a manipulation of the argument mpesa can lead to sql injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

SQL injection in projectworlds Car Rental System 1.0 allows unauthenticated remote attackers to manipulate database queries via the mpesa parameter in /pay.php. The vulnerability carries a CVSS score of 7.3 with network-based exploitation requiring low complexity and no user interaction. …

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Vulnerability AssessmentAI

Risk Assessment	Real-world risk is HIGH despite the absence of CISA KEV confirmation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An unauthenticated remote attacker identifies the projectworlds Car Rental System installation and navigates to the payment processing endpoint at /pay.php. The attacker crafts a malicious HTTP request manipulating the mpesa parameter with SQL injection payload such as: mpesa=' UNION SELECT username,password,email FROM users-- -. …
Remediation	No vendor-released patch identified at time of analysis based on available data sources. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

24 hours: Identify all instances of projectworlds Car Rental System 1.0 in production and isolate affected systems from public internet access or disable the /pay.php endpoint if business-critical functionality permits. …

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

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CVE-2026-5645 vulnerability details – vuln.today

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PHP CVE-2026-5645

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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