Medium severity · published Sep 30, 2026
CVE-2026-103115
OS4ED openSIS-Classic Student Search CustomFieldsFnc.php sql injection
6.3
CVSS
0.2%
EPSS
No
On KEV
Description
A security flaw has been discovered in OS4ED openSIS-Classic up to 9.3. This affects an unknown function of the file functions/CustomFieldsFnc.php of the component Student Search. The manipulation of the argument cust results in sql injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openSIS-Classic · OS4ED
9.0; 9.1; 9.2; 9.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103115
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103115
vdb-entry
https://vuldb.com/vuln/411871
signature
https://vuldb.com/vuln/411871/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-103115
third-party-advisory
https://vuldb.com/submit/954961
exploit
https://github.com/OS4ED/openSIS-Classic/issues/475
product
https://github.com/OS4ED/openSIS-Classic/
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