CVE-2020-6122
Status: ModifiedHigh (8.8)—
SQL injection vulnerability exists in the CheckDuplicateStudent.php page of OS4Ed openSIS 7.3. The mn parameter in the page CheckDuplicateStudent.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request to trigger this vulnerability.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Base score: 8.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.40%
- Percentile among all scored CVEs: 72
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-89
- CWE-89
References
Raw JSON (NVD)
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{
"id": "CVE-2020-6122",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
"authentication": "SINGLE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "talos-cna@cisco.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.0",
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"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
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},
"impactScore": 2.7,
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"cvssMetricV31": [
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"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
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"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
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},
"impactScore": 5.9,
"exploitabilityScore": 2.8
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},
"affected": [
{
"source": "talos-cna@cisco.com",
"affectedData": [
{
"vendor": "n/a",
"product": "OS4Ed",
"versions": [
{
"status": "affected",
"version": "OS4Ed openSIS 7.3"
}
]
}
]
}
],
"published": "2020-09-01T14:15:13.910",
"references": [
{
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1072",
"tags": [
"Exploit",
"Technical Description",
"Third Party Advisory"
],
"source": "talos-cna@cisco.com"
},
{
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1072",
"tags": [
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"Technical Description",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
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"type": "Secondary",
"source": "talos-cna@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-89"
}
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},
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"description": [
{
"lang": "en",
"value": "CWE-89"
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"descriptions": [
{
"lang": "en",
"value": "SQL injection vulnerability exists in the CheckDuplicateStudent.php page of OS4Ed openSIS 7.3. The mn parameter in the page CheckDuplicateStudent.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request to trigger this vulnerability."
},
{
"lang": "es",
"value": "Se presenta una vulnerabilidad de inyección SQL en la página CheckDuplicateStudent.php de OS4Ed openSIS versión 7.3. El parámetro mn en la página CheckDuplicateStudent.php es vulnerable a una inyección SQL. Un atacante puede hacer una petición HTTP autenticada para desencadenar esta vulnerabilidad"
}
],
"lastModified": "2026-06-17T03:22:43.590",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:os4ed:opensis:7.3:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2A00955B-ADF9-4ED2-A8A1-B110A55DC603"
}
],
"operator": "OR"
}
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}
],
"sourceIdentifier": "talos-cna@cisco.com"
}