CVE-2021-41691

A SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in POST…

Critical · published June 24, 2025

CVSS v3.1
9.8
EPSS
2%
Percentile
80.1
In the wild
Unconfirmed
What it is

🚨 A sneaky SQL injection lurks in OS4Ed Open Source Information System v8.0, waiting for an innocent POST request to unleash chaos! 🔥 Think of this vulnerability like a secret door in a public building that anyone can use without a proper ID check. By simply passing the right parameters, an attacker can access all sorts of sensitive information, just as a misguided visitor could wander into restricted areas without a security badge. An attacker can exploit this vulnerability to access, modify, or even delete critical data in the system. This means they could potentially alter student records, tamper with school data, or cause absolute mayhem in the database — a truly devastating scenario!

Put simply

Think of this vulnerability like a secret door in a public building that anyone can use without a proper ID check. By simply passing the right parameters, an attacker can access all sorts of sensitive information, just as a misguided visitor could wander into restricted areas without a security badge. The SQL injection vulnerability arises from unsafe handling of the "student_id" and "TRANSFER{SCHOOL]" parameters in POST requests sent to /TransferredOutModal.php. Malicious SQL commands can be injected, allowing unauthorized access to the database.

What to do

An attacker can exploit this vulnerability to access, modify, or even delete critical data in the system. This means they could potentially alter student records, tamper with school data, or cause absolute mayhem in the database — a truly devastating scenario! Immediately patch OS4Ed to the latest version to close this vulnerability. Additionally, ensure that all inputs are properly sanitized and parameterized to prevent SQL injection in the future. Regular security audits can help catch these types of issues before they become critical. You've got this! Follow these steps, and you'll have your system secure in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01948 · 80.1th percentile
Published
2025-06-24T00:00Z
EPSS history
Timeline
  • 24 JUN 00:00Z
    A SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in POST…
    cvelistv5