Is CVE-2023-5277 actively exploited?

No active exploitation of CVE-2023-5277 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-5277 be exploited remotely?

Yes. CVE-2023-5277 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-5277?

CVE-2023-5277 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-5277

CWE-434Published: September 29, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability, which was classified as critical, has been found in SourceCodester Engineers Online Portal 1.0. This issue affects some unknown processing of the file student_avatar.php. The manipulation of the argument change leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-240905 was assigned to this vulnerability.

NVD Source

Risk Analysis

This vulnerability in SourceCodester Engineers Online Portal allows for unrestricted file uploads via the student_avatar.php script. Given the critical CVSS score of 9.8, this flaw poses a severe risk as it could lead to remote code execution. It is not currently listed in the CISA KEV catalog.

There is no known public exploit for this vulnerability, though it is remotely exploitable due to the low complexity and lack of required authentication.

Recommended Action

Users should restrict file upload permissions and validate file types on the server side. Apply any available patches from the vendor.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-5277 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.