CVE-2020-8281 - Vulnerability Details - OpenCVE

Description

A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks.

Published: 2021-01-06

Score: 5.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

Nextcloud Contacts

affected

Version	Status	Constraints
`Fixed in 3.4.0`	affected	—

Configuration 1 [-]

cpe:2.3:a:nextcloud:contacts:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2020-29149	A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

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 Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00621.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://hackerone.com/reports/894876
https://nextcloud.com/security/advisory/?id=NC-SA-2020-045

History

No history.

Subscriptions

Nextcloud Contacts

MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2021-01-06T20:58:09.000Z

Updated: 2024-08-04T09:56:28.324Z

Reserved: 2020-01-28T00:00:00.000Z

Link: CVE-2020-8281

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-01-06T21:15:14.647

Modified: 2026-06-17T03:26:11.253

Link: CVE-2020-8281

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"containers": {"cna": {"affected": [{"product": "Nextcloud Contacts", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in 3.4.0"}]}], "descriptions": [{"lang": "en", "value": "A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "Cross-site Scripting (XSS) - Stored (CWE-79)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-01-06T20:58:09.000Z", "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/894876"}, {"tags": ["x_refsource_MISC"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "support@hackerone.com", "ID": "CVE-2020-8281", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Nextcloud Contacts", "version": {"version_data": [{"version_value": "Fixed in 3.4.0"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Cross-site Scripting (XSS) - Stored (CWE-79)"}]}]}, "references": {"reference_data": [{"name": "https://hackerone.com/reports/894876", "refsource": "MISC", "url": "https://hackerone.com/reports/894876"}, {"name": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045", "refsource": "MISC", "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T09:56:28.324Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/894876"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045"}]}]}, "cveMetadata": {"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "assignerShortName": "hackerone", "cveId": "CVE-2020-8281", "datePublished": "2021-01-06T20:58:09.000Z", "dateReserved": "2020-01-28T00:00:00.000Z", "dateUpdated": "2024-08-04T09:56:28.324Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "Nextcloud Contacts", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in 3.4.0"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:contacts:*:*:*:*:*:*:*:*", "matchCriteriaId": "02274243-2A2F-4864-9D67-00E2B6D3A237", "versionEndExcluding": "3.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks."}, {"lang": "es", "value": "Una falta de comprobaci\u00f3n de tipo de archivo en Nextcloud Contacts versi\u00f3n 3.3.0, permite a un usuario malicioso cargar archivos SVG maliciosos para llevar a cabo ataques de tipo cross-site scripting"}], "id": "CVE-2020-8281", "lastModified": "2026-06-17T03:26:11.253", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "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": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-01-06T21:15:14.647", "references": [{"source": "support@hackerone.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackerone.com/reports/894876"}, {"source": "support@hackerone.com", "tags": ["Vendor Advisory"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackerone.com/reports/894876"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-045"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "support@hackerone.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}