CVE-2021-40542

6.1 MEDIUM

Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS)

Published: 2021-10-11 · Last updated: 2026-06-17

Severity and scoring

CVSS: 6.1 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE: CWE-79

Affected products

Vendor	Product
os4ed	opensis

Description

Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-40542
[Exploit reference]https://github.com/OS4ED/openSIS-Classic/issues/189
[Exploit reference]https://github.com/OS4ED/openSIS-Classic/issues/189

Related CVEs

Same vendor

CVE-2021-40618 — An SQL Injection vulnerability exists in openSIS Classic 8.0 via the 1) ADDR_CONT_USRN, 2) ADDR_CONT_PSWD, 3) SECN_CONT_USRN or 4) SECN_C... (9.8 CRITICAL)
CVE-2021-40617 — An SQL Injection vulnerability exists in openSIS Community Edition version 8.0 via ForgotPassUserName.php (9.8 CRITICAL)
CVE-2021-40543 — Opensis-Classic Version 8.0 is affected by a SQL injection vulnerability due to a lack of sanitization of input data at two parameters $_... (9.8 CRITICAL)
CVE-2021-40651 — OS4Ed OpenSIS Community 8.0 is vulnerable to a local file inclusion vulnerability in Modules.php (modname parameter), which can disclose ... (6.5 MEDIUM)
CVE-2021-40310 — OpenSIS Community Edition version 8.0 is affected by a cross-site scripting (XSS) vulnerability in the TakeAttendance.php via the cp_id_m... (5.4 MEDIUM)

Same CWE

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