CVE-2026-103115: OS4ED openSIS-Classic · SQL Injection
Affects OS4ED openSIS-ClassicSource CVE Database V5
Public exploit available · CVSS 5.3 Medium.
Data as of 14 Nov 2026, 20:43 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:PExploitation evidence
Disclosed: evidence found.
CVE published 30 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| OS4EDopenSIS-Classic | Affected
| Fixed in– |
GitHubos4ed/openSIS-Classicpkg:github/os4ed/openSIS-ClassicOther threats | Affected
| Fixed in– |
CPE configurations (1)
cpe:2.3:a:os4ed:opensis-classic:*:*:*:*:*:*:*:*
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should monitor the vendor's communications for updates. Until a patch is released, consider restricting access to the affected component or applying web application firewall rules to detect and block SQL injection attempts targeting the 'cust' parameter.
Description
CVE-2026-103115 is a medium severity SQL injection vulnerability in OS4ED openSIS-Classic versions 9.0 through 9.3. The flaw exists in the Student Search component, specifically in the functions/CustomFieldsFnc.php file, where manipulation of the 'cust' argument allows remote attackers to perform SQL injection. The vulnerability has a public exploit available, but the vendor has not yet responded or issued a patch.
References
- vuldb.com/vuln/411871 (opens in a new tab)
- vuldb.com/vuln/411871/cti (opens in a new tab)
- vuldb.com/cve/CVE-2026-103115 (opens in a new tab)
- vuldb.com/submit/954961 (opens in a new tab)
- github.com/OS4ED/openSIS-Classic/issues/475 (opens in a new tab)
- github.com/OS4ED/openSIS-Classic/ (opens in a new tab)