Cyber Resilience

CVE-2026-5814

Medium

Published: 09 April 2026

Published
09 April 2026
Modified
24 April 2026
KEV Added
—
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 13.5th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-5814 is a medium-severity Injection (CWE-74) vulnerability in Phpgurukul (inferred from references). 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 13.5th 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-2026-5814 is a SQL injection vulnerability (CWE-74, CWE-89) in PHPGurukul Online Course Registration version 3.1. The flaw affects the processing in the file /admin/check_availability.php, where manipulation of the "regno" argument enables the injection.

The vulnerability is remotely exploitable with low attack complexity, requiring no privileges or user interaction, per its CVSS 3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). Unauthenticated attackers can initiate the exploit to achieve low-level impacts on confidentiality, integrity, and availability, such as unauthorized data access, modification, or disruption.

Advisories referenced in VulDB entries (vuln/356262) and a GitHub issue (f1rstb100d/CVE/issues/21) detail the issue, with the exploit publicly disclosed. The vendor site phpgurukul.com should be monitored for patches or updates.

The exploit has been publicly disclosed and may be used in attacks.

EU & UK References

Vulnerability details

A security vulnerability has been detected in PHPGurukul Online Course Registration 3.1. This issue affects some unknown processing of the file /admin/check_availability.php. The manipulation of the argument regno leads to sql injection. The attack can be initiated remotely. The exploit…

more

has been disclosed publicly and may 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?

The SQL injection vulnerability in a public-facing web application (PHPGurukul Online Course Registration) is remotely exploitable without authentication or user interaction, directly enabling T1190 Exploit Public-Facing Application.

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

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CVE-2026-0597Shared CWE-74, CWE-89
CVE-2026-1688Shared CWE-74, CWE-89
CVE-2026-5018Shared CWE-74, CWE-89

Affected Assets

Phpgurukul
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents SQL injection by requiring validation and sanitization of the untrusted 'regno' input before processing in /admin/check_availability.php.

SI-2 Flaw Remediation good match
prevent

Mandates timely identification, reporting, and correction of the specific SQL injection flaw through patching or code remediation.

SC-7 Boundary Protection partial match
prevent

Boundary protection with web application firewalls or proxies can inspect traffic and block SQL injection payloads targeting the vulnerable endpoint.

References