Quick answers
- Is CVE-2026-103113 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103113 being exploited in the wild.
- How severe is CVE-2026-103113?
- Medium severity, with a CVSS score of 4.7, published 30 September 2026.
- Which products and versions are affected?
- OS4ED openSIS Classic up to 9.3.
- Is there a fix for CVE-2026-103113?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-103113 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-103113?
- Check whether you run OS4ED openSIS Classic at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A second-order SQL injection exists in the student fields save functionality (modules/students/StudentFields.php) where user-supplied input is concatenated directly into SQL UPDATE statements without proper parameterization. An authenticated administrator can inject payload through the custom fields editor, which is stored in the database and later executed when lower-privileged users trigger student search operations. The vulnerability requires administrative privileges to plant the payload but can be exploited remotely by any user who performs a student search.
Affected products
- OS4ED openSIS-Classic up to 9.3
Timeline
- 2026-09-01: disclosed: Issue #475 reported on GitHub
- 2026-09-30: advisory: CVE-2026-103113 published