{"id":"CVE-2023-1421","summary":"Reflected XSS in OAuth flow completion endpoints","details":"A reflected cross-site scripting vulnerability in the OAuth flow completion endpoints in Mattermost allows an attacker to send AJAX requests on behalf of the victim via sharing a crafted link with a malicious state parameter.","aliases":["BIT-mattermost-2023-1421"],"modified":"2026-05-18T05:56:25.060022074Z","published":"2023-03-15T22:51:25.597Z","database_specific":{"cwe_ids":["CWE-79"],"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"5.32.0"},{"fixed":"7.7"}]}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1421.json","cna_assigner":"Mattermost"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1421.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1421"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0408a9699e5822238844993166bed36cd91ebb6c"},{"fixed":"ea08d47f6051f480153f9035e3b255b937ee5229"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"5.32.0"},{"fixed":"7.7.0"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-1421.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N"}]}