Vulnerability · Published Jun 29, 2026 · Assigned by VulDB

CVE-2026-13521SourceCodester Class and Exam Timetabling System preview5.php sql injection

High 7.3

In plain English

A high-severity SQL injection in Class and Exam Timetabling System from SourceCodester. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.4%top 62.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0/5.php. Affected by this vulnerability is an unknown functionality of the file /preview5.php. Such manipulation of the argument course_year_section leads to sql injection. The attack may be performed from remote. The exploit is publicly available and might be used.

Affected products (as reported)

Vendor	Product	Versions
SourceCodester	Class and Exam Timetabling System	1.05.php

Weakness: CWE-89, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-374529 | SourceCodester Class and Exam Timetabling System preview5.php sql injection vdb-entry, technical-description
VDB-374529 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-13521 | CVE Analysis and Report third-party-advisory
Submit #839572 | sourcecodester Class and Exam Timetabling System V1.0 SQL injection third-party-advisory
https://github.com/xiaoxuxu233/myCVE/issues/2 exploit, issue-tracking
https://www.sourcecodester.com/ product