CVE-2026-0547
Published: 02 January 2026
Summary
CVE-2026-0547 is a medium-severity Improper Access Control (CWE-284) vulnerability in Phpgurukul Online Course Registration. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control enforces ownership-based restrictions on portable storage device use, directly implementing access control over media insertion into organizational systems.
Hardware write-protect enforces access control on critical resources (e.g., firmware) independent of software state.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload in public-facing PHP web app directly enables remote exploitation (T1190) and deployment of web shells (T1100/T1505.003) for persistence and further access.
NVD Description
A vulnerability was found in PHPGurukul Online Course Registration up to 3.1. This issue affects some unknown processing of the file /admin/edit-student-profile.php of the component Student Registration Page. The manipulation of the argument photo results in unrestricted upload. The attack…
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may be launched remotely. The exploit has been made public and could be used.
Deeper analysisAI
CVE-2026-0547 is an unrestricted file upload vulnerability in PHPGurukul Online Course Registration versions up to 3.1. The issue resides in the processing of the /admin/edit-student-profile.php file within the Student Registration Page component, where manipulation of the 'photo' argument allows attackers to upload arbitrary files without restrictions.
The vulnerability has a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and can be exploited remotely by low-privileged users, such as authenticated students or admins with access to the edit profile function. Successful exploitation enables limited impacts on confidentiality, integrity, and availability, potentially allowing attackers to upload malicious files like web shells for further compromise.
Advisories and details are available via VulDB entries (ctiid.339355, id.339355) and a submission link, along with the vendor site at phpgurukul.com; a related GitHub repository documents exploitation, including a public proof-of-concept. No specific patch or mitigation steps are detailed in the core description.
The exploit has been publicly disclosed and could be used in targeted attacks against exposed instances.
Details
- CWE(s)