CVE-2026-9483Public exploitNetwork attack vector

Cross-student grade access via unchecked identifier

Published May 25, 2026 · Updated May 25, 2026

Improper authorization in SourceCodester Student Grades Management System 1.0 allows remote authenticated users to access other students' grades. The grades.php handler trusts a caller-controlled student_id value without verifying that the logged-in account is authorized for the referenced student. A low-privileged account and network access to the web application are required, and the reported impact is limited to unauthorized grade-record operations.

CVSS severity6.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in SourceCodester Student Grades Management System 1.0 allows remote authenticated users to access other students' grades. The grades.php handler trusts a caller-controlled student_id value without verifying that the logged-in account is authorized for the referenced student. A low-privileged account and network access to the web application are required, and the reported impact is limited to unauthorized grade-record operations.

The record

CVE
CVE-2026-9483
Published
May 25, 2026
Updated
May 25, 2026
Vendor
Online Computer and Laptop Store Project
Product
Student Grades Management System
Classifications
CWE-285, CWE-266, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Online Computer and Laptop Store Project · Student Grades Management Systemversion=1.0

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
5.3VulDBCVSS: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
6.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-266Incorrect Privilege Assignment
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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