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Timetabling System EUVDEUVD-2026-39986

| CVE-2026-13486 MEDIUM
SQL Injection (CWE-89)
2026-06-28 VulDB GHSA-v27j-7ppq-v4p8
SQLi PHP Class And Exam Timetabling System
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 SQLi with no user interaction; C/I/A set to Low reflecting database-scope impact without inherent code execution or scope change.

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
Analysis Generated
Jun 28, 2026 - 10:35 vuln.today
CVSS changed
Jun 28, 2026 - 10:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)

DescriptionCVE.org

A vulnerability was determined in SourceCodester Class and Exam Timetabling System 1.0/6.php. This impacts an unknown function of the file /preview6.php. Executing a manipulation of the argument course_year_section can lead to sql injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

SQL injection in SourceCodester Class and Exam Timetabling System 1.0 allows unauthenticated remote attackers to manipulate the course_year_section parameter on the /preview6.php endpoint, enabling unauthorized read and write access to the underlying database. The CVSS 4.0 vector (AV:N/AC:L/PR:N/UI:N) confirms exploitation requires no authentication and no special conditions, and a public proof-of-concept has been disclosed on GitHub. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify internet-exposed /preview6.php endpoint
Exploit
Inject SQL payload into course_year_section parameter
Execution
Backend query executes unsanitized input
Impact
Extract or modify database records
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Vulnerability AssessmentAI

Exploitation The `/preview6.php` endpoint must be reachable by the attacker over the network - the CVSS 4.0 AV:N confirms network-based access. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 5.5 (Medium) is derived from a vector of AV:N/AC:L/AT:N/PR:N/UI:N with low impact across confidentiality, integrity, and availability on the vulnerable system and no scope to subsequent systems. … 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 `/preview6.php` with a `course_year_section` value containing SQL injection syntax (for example, `' UNION SELECT username,password,NULL FROM users--`). The application interpolates this payload directly into a SQL query, returning database contents in the HTTP response or causing observable error-based or time-based behavior that confirms injection. …
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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EUVD-2026-39986 vulnerability details – vuln.today
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