{ "containers": { "cna": { "affected": [ { "product": "security-advisories", "vendor": "nextcloud", "versions": [ { "status": "affected", "version": "< 19.0.13" }, { "status": "affected", "version": ">= 20.0.0, < 20.0.11" }, { "status": "affected", "version": ">= 21.0.0, < 21.0.3" } ] } ], "descriptions": [ { "lang": "en", "value": "Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-07-12T21:05:12.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/nextcloud/text/pull/1689" }, { "tags": [ "x_refsource_MISC" ], "url": "https://hackerone.com/reports/1241460" } ], "source": { "advisory": "GHSA-x4w3-jhcr-57pq", "discovery": "UNKNOWN" }, "title": "XSS in Nextcloud Text application", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32733", "STATE": "PUBLIC", "TITLE": "XSS in Nextcloud Text application" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "security-advisories", "version": { "version_data": [ { "version_value": "< 19.0.13" }, { "version_value": ">= 20.0.0, < 20.0.11" }, { "version_value": ">= 21.0.0, < 21.0.3" } ] } } ] }, "vendor_name": "nextcloud" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq", "refsource": "CONFIRM", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq" }, { "name": "https://github.com/nextcloud/text/pull/1689", "refsource": "MISC", "url": "https://github.com/nextcloud/text/pull/1689" }, { "name": "https://hackerone.com/reports/1241460", "refsource": "MISC", "url": "https://hackerone.com/reports/1241460" } ] }, "source": { "advisory": "GHSA-x4w3-jhcr-57pq", "discovery": "UNKNOWN" } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:33:55.559Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/nextcloud/text/pull/1689" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://hackerone.com/reports/1241460" } ] } ] }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32733", "datePublished": "2021-07-12T21:05:12.000Z", "dateReserved": "2021-05-12T00:00:00.000Z", "dateUpdated": "2024-08-03T23:33:55.559Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }