CVE-2021-40542 - Vulnerability Details - OpenCVE

Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Os4ed	Opensis

Configuration 1 [-]

cpe:2.3:a:os4ed:opensis:8.0:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/OS4ED/openSIS-Classic/issues/189

History

Sun, 13 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.1551}`	epss `{'score': 0.15266}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-10-11T12:44:52

Updated: 2024-08-04T02:44:10.945Z

Reserved: 2021-09-07T00:00:00

Link: CVE-2021-40542

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-10-11T13:15:07.417

Modified: 2024-11-21T06:24:21.637

Link: CVE-2021-40542

Redhat

No data.

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:os4ed:opensis:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "20B5286C-4CFF-4710-8D23-C76669FADFE7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php."}, {"lang": "es", "value": "Opensis-Classic versi\u00f3n 8.0, est\u00e1 afectada por una vulnerabilidad de tipo cross-site scripting (XSS). Un usuario no autenticado puede inyectar y ejecutar c\u00f3digo JavaScript mediante el par\u00e1metro link_url en el archivo Ajax_url_encode.php"}], "id": "CVE-2021-40542", "lastModified": "2024-11-21T06:24:21.637", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-10-11T13:15:07.417", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/OS4ED/openSIS-Classic/issues/189"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/OS4ED/openSIS-Classic/issues/189"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}