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CVE-2026-103115— OS4ED openSIS-Classic Student Search CustomFieldsFnc.php sql injection

Quick assessment

Affected
OS4ED openSIS-Classic
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.

在 OS4ED openSIS-Classic 9.3 及更早版本中发现了一个安全漏洞。该漏洞影响 Student Search（学生搜索）组件中 文件的一个未知函数。对参数 的操纵可导致 SQL 注入攻击。该漏洞可被远程利用，且相关利用代码已公开，可能被用于发起攻击。项目方已通过问题报告提前获知此漏洞，但截至目前尚未作出回应。

CVSS 6.3 · Medium EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
OS4ED openSIS-Classic 9.0 affected
9.1 affected
9.2 affected
9.3 affected
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I. Basic Information for CVE-2026-103115

Vulnerability Information
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Vulnerability Title
OS4ED openSIS-Classic Student Search CustomFieldsFnc.php sql injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in OS4ED openSIS-Classic up to 9.3. This affects an unknown function of the file functions/CustomFieldsFnc.php of the component Student Search. The manipulation of the argument cust results in sql injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OS4ED openSIS-Classic 9.0 cpe:2.3:a:os4ed:opensis-classic:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-103115

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III. Intelligence Information for CVE-2026-103115

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Vendor Advisories for CVE-2026-103115 (1)

Same Patch Batch · OS4ED · 2026-09-30 · 5 CVEs total

CVE-2026-103114 6.3 MEDIUM OS4ED openSIS-Classic Assignment Management Endpoint Assignments.php DBQuery_assignment sq
CVE-2026-103116 6.3 MEDIUM OS4ED openSIS-Classic Student List Search Endpoint GetStuListFnc.php DBQuery sql injection
CVE-2026-103113 4.7 MEDIUM OS4ED openSIS-Classic General Information Tab Student.php save action sql injection
CVE-2026-103117 4.7 MEDIUM OS4ED openSIS-Classic Save Data DatabaseInc.php db_properties sql injection

IV. Related Vulnerabilities

Same product: openSIS-Classic
Same vendor: OS4ED
Same weakness: CWE-89

V. Comments for CVE-2026-103115

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