---
id: CVE-2021-45416
title: >-
  Reflected Cross-site scripting (XSS) vulnerability in RosarioSIS 8.2.1 allows
  attackers to inject arbitrary HTML via the search_term parameter in the
  modules/Scheduling/Courses.php script.
summary: >-
  Reflected Cross-site scripting (XSS) vulnerability in RosarioSIS 8.2.1 allows
  attackers to inject arbitrary HTML via the search_term parameter in the
  modules/Scheduling/Courses.php script.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: rosariosis
product: rosariosis
affected:
  - rosariosis = 8.2.1
published: '2022-02-01'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-45416'
references:
  - url: 'https://github.com/86x/CVE-2021-45416'
    label: cve@mitre.org
  - url: 'http://rosariosis.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/86x/CVE-2021-45416'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.02327
epssPercentile: 0.82797
ingestedAt: '2026-07-06T17:03:23.876Z'
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/86x/CVE-2021-45416'
    - 'https://github.com/dnr6419/CVE-2021-45416'
  checkedAt: '2026-09-26T09:05:27.698Z'
exploitAvailable: true
---

## Overview

Reflected Cross-site scripting (XSS) vulnerability in RosarioSIS 8.2.1 allows attackers to inject arbitrary HTML via the search_term parameter in the modules/Scheduling/Courses.php script.

## Affected

- `rosariosis = 8.2.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.