Vulnerability · Published Jul 18, 2026 · Assigned by VulDB

CVE-2026-16156SourceCodester Class and Exam Timetabling System forexam.php cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting 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 0.3% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.3%top 71.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /forexam.php. The manipulation of the argument day results in cross site scripting. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
SourceCodester	Class and Exam Timetabling System	1.0

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-379921 | SourceCodester Class and Exam Timetabling System forexam.php cross site scripting vdb-entry, technical-description
VDB-379921 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-16156 | CVE Analysis and Report third-party-advisory
Submit #857081 | sourcecodester Class and Exam Timetabling System V1.0 cross site scripting third-party-advisory
https://github.com/justconter/cve/issues/3 exploit, issue-tracking
https://www.sourcecodester.com/ product