EUVD-2026-41791
GHSA-6pv2-9j3w-5x6g
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Low-privilege authentication required (PR:L); no special conditions needed (AC:L); webshell upload achieves full server compromise with scope change (S:C, C/I/A:H).
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Lifecycle Timeline
5DescriptionCVE.org
A security flaw has been discovered in SourceCodester Onlne Examination & Learning Management System 1.0. Affected by this vulnerability is the function pathinfo of the file /upload_files.php of the component Filename Extension. Performing a manipulation results in unrestricted upload. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The name of the affected product appears to have a typo in it.
AnalysisAI
Unrestricted file upload in SourceCodester Onlne Examination & Learning Management System 1.0 (a PHP-based web application whose product name contains a documented typo - 'Onlne' rather than 'Online') permits remote low-privileged authenticated users to upload arbitrary files, including PHP webshells, via the /upload_files.php endpoint by exploiting inadequate extension validation in the pathinfo() function. Publicly available exploit code exists on GitHub, with the exploit document explicitly titled to reference remote code execution against this specific upload handler. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session with at minimum low-privilege access (PR:L per the CVSS 4.0 vector), such as a registered student, exam taker, or any account the application permits to self-register. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 4.0 score of 2.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P) appears significantly understated and conflicts with the exploitation evidence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or acquires a low-privilege authenticated account on the target application (e.g., as a student or exam participant), then submits a crafted HTTP POST request to /upload_files.php containing a PHP webshell whose filename is constructed to evade the pathinfo()-based extension check - for example, by exploiting which pathinfo() component the validator evaluates. Once the file is stored on the server in a web-accessible directory, the attacker navigates to its URL to trigger execution, obtaining arbitrary OS command execution at the privilege level of the web server process. … |
| Remediation | No vendor-released patch has been identified at time of analysis - SourceCodester does not issue formal security advisories or patched releases for its freely distributed code samples, making upstream remediation unlikely. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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