CVE-2026-16155

SourceCodester Class and Exam Timetabling System schoolyr.php cross site scripting

A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0. Affected by this issue is some unknown functionality of the file /schoolyr.php. The manipulation of the argument sy leads to cross site scripting. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Affected

SourceCodester · Class and Exam Timetabling System

CVSS v4.0 VULDB

2.0 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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

CVSS v3.1 VULDB

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS v2.0 VULDB

4.0 MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N

EPSS

0.35% chance of exploitation in the next 30 days, 27th percentile

Published

2026-07-18

Updated

2026-07-21

Proof-of-concept exploits (1)

• justconter/cve/issues/40★ · 2026-09-04

References

• CVE Record
• NVD entry

Related

• CVE-2025-8441
• CVE-2025-8442
• CVE-2026-16152
• CVE-2026-16154
• CVE-2026-16156
• CVE-2026-85512