CVE-2021-41691 SQL injection in n/a
Attackers can inject SQL via student_id and TRANSFER{SCHOOL] parameters in OS4Ed OSIS Community to read or modify database contents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-41691?
CVE-2021-41691 is a critical SQL injection vulnerability in Os4ed Opensis, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in POST request sent to /TransferredOutModal.php.
Weakness: CWE-89
Which versions are affected by CVE-2021-41691?
It affects 1 product.
Products include Os4ed Opensis.
How do I fix CVE-2021-41691?
No fix has been published for CVE-2021-41691 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2021-41691 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-41691 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Os4ed Opensis
Sources
Also known as GHSA-gcfh-26rr-mgwj.