{"id":"CVE-2022-21650","summary":"Stored XSS via html file upload in convos","details":"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.","aliases":["GHSA-mm2v-4v7g-m695"],"modified":"2026-08-12T03:51:28.371993744Z","published":"2022-01-04T20:40:14Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21650.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21650.json"},{"type":"ADVISORY","url":"https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21650"},{"type":"FIX","url":"https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df"},{"type":"ARTICLE","url":"https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/convos-chat/convos","events":[{"introduced":"ac6561598373139c127d32bd7399a524ef17a76f"},{"fixed":"794ab7d2273327829230bfa96b5b3126b0547bb1"},{"fixed":"5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:convos:convos:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"6.48"},{"fixed":"6.52"}]}}],"versions":["v6.51","v6.50","v6.49","v6.48"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-21650.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N"}]}