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CVE-2026-16155— SourceCodester Class and Exam Timetabling System schoolyr.php cross site scripting

Quick assessment

Affected
SourceCodester Class and Exam Timetabling System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SourceCodester class and exam timetabling system是SourceCodester公司的课表管理系统。 SourceCodester Class and Exam Timetabling System 1.0版本存在安全漏洞，该漏洞源于文件/schoolyr.php中参数sy操作导致跨站脚本。

CVSS 3.5 · Low EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
SourceCodester Class and Exam Timetabling System 1.0 affected
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I. Basic Information for CVE-2026-16155

Vulnerability Information
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Vulnerability Title
SourceCodester Class and Exam Timetabling System schoolyr.php cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
SourceCodester Class and Exam Timetabling System 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SourceCodester class and exam timetabling system是SourceCodester公司的课表管理系统。 SourceCodester Class and Exam Timetabling System 1.0版本存在安全漏洞，该漏洞源于文件/schoolyr.php中参数sy操作导致跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SourceCodester Class and Exam Timetabling System 1.0 cpe:2.3:a:sourcecodester:class_and_exam_timetabling_system:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-16155

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III. Intelligence Information for CVE-2026-16155

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Proof of Concept for CVE-2026-16155 (1)

Other References for CVE-2026-16155 (1)

Same Patch Batch · SourceCodester · 2026-07-18 · 4 CVEs total

CVE-2026-16154 7.3 HIGH SourceCodester Class and Exam Timetabling System edit_room1.php sql injection
CVE-2026-16152 7.3 HIGH SourceCodester Class and Exam Timetabling System edit_rooma.php sql injection
CVE-2026-16156 3.5 LOW SourceCodester Class and Exam Timetabling System forexam.php cross site scripting

IV. Related Vulnerabilities

Same product: Class and Exam Timetabling System
Same vendor: SourceCodester
Same weakness: CWE-79

V. Comments for CVE-2026-16155

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