{"containers": {"cna": {"affected": [{"product": "convos", "vendor": "convos-chat", "versions": [{"status": "affected", "version": ">= 6.48, < 6.52"}]}], "descriptions": [{"lang": "en", "value": "Convos is an open source multi-user chat that runs in a web browser. You can't use SVG extension in Convos' chat window, but you can upload a file with an .html extension. By uploading an SVG file with an html extension the upload filter can be bypassed. This causes Stored XSS. Also, after uploading a file the XSS attack is triggered upon a user viewing the file. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/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": "2022-01-04T20:40:14", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df"}, {"tags": ["x_refsource_MISC"], "url": "https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695"}], "source": {"advisory": "GHSA-mm2v-4v7g-m695", "discovery": "UNKNOWN"}, "title": "Stored XSS via html file upload in convos", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2022-21650", "STATE": "PUBLIC", "TITLE": "Stored XSS via html file upload in convos"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "convos", "version": {"version_data": [{"version_value": ">= 6.48, < 6.52"}]}}]}, "vendor_name": "convos-chat"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Convos is an open source multi-user chat that runs in a web browser. You can't use SVG extension in Convos' chat window, but you can upload a file with an .html extension. By uploading an SVG file with an html extension the upload filter can be bypassed. This causes Stored XSS. Also, after uploading a file the XSS attack is triggered upon a user viewing the file. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/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://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability", "refsource": "MISC", "url": "https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability"}, {"name": "https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df", "refsource": "MISC", "url": "https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df"}, {"name": "https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/", "refsource": "MISC", "url": "https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/"}, {"name": "https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695", "refsource": "CONFIRM", "url": "https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695"}]}, "source": {"advisory": "GHSA-mm2v-4v7g-m695", "discovery": "UNKNOWN"}}}}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2022-21650", "datePublished": "2022-01-04T20:40:14", "dateReserved": "2021-11-16T00:00:00", "dateUpdated": "2022-01-04T20:40:14", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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