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 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 22.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and CM-7 (Least Functionality).
Deeper analysis
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.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-0698
Vulnerability details
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.
- CWE(s)
Related Threats
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.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces validation of the 'photo' file input in edit-student-profile.php to reject unauthorized file types or content before upload succeeds.
Requires malicious-code scanning and blocking of uploaded files (e.g., web shells) at the application or boundary level for this student-profile upload path.
Restricts the registration component to only permit a defined set of safe file extensions and upload behaviors, eliminating the unrestricted 'photo' handling.