---
id: "CVE-2026-121731"
kind: "vulnerability"
aliases: ["CVE-2026-121731"]
title: "RosarioSIS: SQL injection lets logged-in parents read admin password hashes"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "rosariosis", "school-systems", "self-hosted"]
not_affected_if: ["version-12.9-or-later"]
published_at: "2026-11-03T23:17:36+00:00"
first_seen_at: "2026-11-03T23:45:15+00:00"
updated_at: "2026-11-03T23:45:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121731", "first_seen_at": "2026-11-03T23:45:15+00:00"}]
---

# RosarioSIS: SQL injection lets logged-in parents read admin password hashes

RosarioSIS is an open-source school information system. Before version 12.9, an unquoted period_id parameter in StudentSummary.php lets any authenticated non-student user, including parents, inject SQL and extract administrator password hashes and student records or modify data.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed RosarioSIS version and confirm whether it is below `12.9`.
- Look for `StudentSummary.php` in the installation and confirm whether it handles `period_id` without quoting.

## Fix

- Upgrade RosarioSIS to `12.9` or later.

## Timeline

- 2026-11-03T23:45:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121731

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/rosariosis-before-12.9-sql-injection-via-period-id-in-attendance-absence-report
- [fix] Patch: github.com https://github.com/francoisjacquet/rosariosis/commit/1b809f9761b50c3f6faf9e1b2b5f5e74d63509c1
- [fix] Release notes: github.com https://github.com/francoisjacquet/rosariosis/releases/tag/v12.9

## From the sources

RosarioSIS before 12.9 contains a sql injection vulnerability that allows authenticated non-student users, including parents, to inject SQL via the unquoted period_id parameter in StudentSummary.php. Attackers can supply payloads without single quotes into IN() clauses to extract administrator password hashes and student records through time-based queries or modify data via stacked statements.

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