Vulnerability · Published Apr 6, 2026 · Assigned by VulDB

CVE-2026-5670Cyber-III Student-Management-System upload.php move_uploaded_file unrestricted upload

Medium 6.3

In plain English

A medium-severity unrestricted file upload in Student-Management-System from Cyber-III. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.2%top 88.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. This issue affects the function move_uploaded_file of the file /AssignmentSection/submission/upload.php. Performing a manipulation of the argument File results in unrestricted upload. The attack can be initiated remotely. The exploit has been made public and could be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
Cyber-III	Student-Management-System	1a938fa61e9f735078e9b291d2e6215b4942af3f

Weakness: CWE-434, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-355492 | Cyber-III Student-Management-System upload.php move_uploaded_file unrestricted upload vdb-entry, technical-description
VDB-355492 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #786022 | Cyber-III Student-Management-System 1.0 RCE vulnerability third-party-advisory
https://github.com/Cyber-III/Student-Management-System/issues/241 exploit, issue-tracking
https://github.com/Cyber-III/Student-Management-System/ product