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Timetabling System CVE-2026-13526

| EUVDEUVD-2026-40023 MEDIUM
SQL Injection (CWE-89)
2026-06-29 VulDB GHSA-6qpr-mpcq-v8g7
5.5
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
vuln.today AI
7.3 HIGH

Network-accessible unauthenticated endpoint with no interaction needed; low C/I/A reflects constrained database scope, not full system compromise.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
CVSS changed
Jun 29, 2026 - 03:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
Analysis Generated
Jun 29, 2026 - 02:47 vuln.today

DescriptionCVE.org

A flaw has been found in SourceCodester Class and Exam Timetabling System 1.0. Impacted is an unknown function of the file /edit_class.php. This manipulation of the argument ID causes sql injection. The attack may be initiated remotely. The exploit has been published and may be used.

AnalysisAI

SQL injection in SourceCodester Class and Exam Timetabling System 1.0 exposes the /edit_class.php endpoint to unauthenticated remote database manipulation via the unsanitized ID parameter. Per the CVSS 4.0 vector (PR:N, UI:N, AC:L), no authentication or user interaction is required to initiate the attack, and a public proof-of-concept exploit is available on GitHub. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send HTTP request to /edit_class.php with malicious ID parameter
Delivery
Bypass absent input validation in PHP
Exploit
Inject SQL payload into backend query
Execution
Query executes with attacker-controlled logic
Impact
Extract or modify database records

Vulnerability AssessmentAI

Exploitation Exploitation requires network access to the `/edit_class.php` endpoint and the ability to supply arbitrary values to the `ID` parameter - no authentication, no user interaction, and no special server configuration is needed per the CVSS 4.0 vector (PR:N, UI:N, AC:L, AT:N). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.9 (Medium) reflects an accessible, unauthenticated attack vector (AV:N/AC:L/AT:N/PR:N/UI:N) with low partial impact across confidentiality, integrity, and availability (VC:L/VI:L/VA:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker sends a crafted HTTP GET or POST request to `/edit_class.php?id=1 UNION SELECT username,password,3 FROM users--`, injecting a malicious SQL payload via the `ID` parameter and causing the backend database to return sensitive records such as administrator credentials or student data. A public proof-of-concept is available on GitHub (https://github.com/yuanyuandechen/vul/issues/2), reducing the skill barrier to near zero. …
Remediation No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-13526 vulnerability details – vuln.today

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