Cyber Resilience

CVE-2026-5634

Medium

Published: 06 April 2026

Published
06 April 2026
Modified
27 April 2026
KEV Added
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Patch
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CVSS Score v4 6.9 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 Score 0.0004 12.5th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-5634 is a medium-severity Injection (CWE-74) vulnerability. Its CVSS base score is 6.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 12.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-5634 is a SQL injection vulnerability (CWE-74, CWE-89) affecting projectworlds Car Rental Project version 1.0. The flaw resides in an unknown functionality of the file /book_car.php within the Parameter Handler component, where manipulation of the 'fname' argument enables SQL injection.

With a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), the vulnerability allows remote attackers with no privileges or user interaction to exploit it over the network with low complexity. Successful exploitation can result in low impacts to confidentiality, integrity, and availability, such as unauthorized data access, modification, or disruption.

Advisories and further details, including potential mitigation steps, are available in the following references: https://github.com/eqiya17/collection-of-vulnerabilities/issues/12, https://vuldb.com/submit/785863, https://vuldb.com/vuln/355422, and https://vuldb.com/vuln/355422/cti. A public exploit is available and might be used.

The vulnerability was published on 2026-04-06T08:16:39.700.

EU & UK References

Vulnerability details

A vulnerability was identified in projectworlds Car Rental Project 1.0. Affected by this vulnerability is an unknown functionality of the file /book_car.php of the component Parameter Handler. The manipulation of the argument fname leads to sql injection. The attack can…

more

be initiated remotely. The exploit is publicly available and might be used.

CWE(s)
CWE-74CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

SQL injection in public-facing web app (/book_car.php) directly enables remote exploitation of the application without auth or interaction, matching T1190.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

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CVE-2026-4288Shared CWE-74, CWE-89
CVE-2026-2220Shared CWE-74, CWE-89
CVE-2025-1535Shared CWE-74, CWE-89
CVE-2026-0597Shared CWE-74, CWE-89
CVE-2026-1688Shared CWE-74, CWE-89
CVE-2026-5018Shared CWE-74, CWE-89

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents SQL injection by requiring validation of untrusted inputs like the 'fname' parameter in /book_car.php.

SI-2 Flaw Remediation good match
prevent

Requires timely identification, reporting, and correction of the specific SQL injection flaw in the Parameter Handler component.

SC-7 Boundary Protection partial match
preventdetect

Boundary protection with web application firewalls can inspect and block SQL injection payloads targeting the 'fname' argument remotely.

References