{"id":"CVE-2020-12474","aliases":["DEBIAN-CVE-2020-12474","EUVD-2020-4780","GHSA-mf6c-m6cw-6m7x","UBUNTU-CVE-2020-12474"],"status":"published","title":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1...","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02591,"percentile":0.85409,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2020-05-01T13:45:28Z","modified":"2026-10-26T12:00:29Z","fixes":[{"ecosystem":"Debian:12","package":"telegram-desktop","fixed_in":["2.1.0+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"telegram-desktop","fixed_in":["2.1.0+ds-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0+ds-1"}]}],"versions":["1.0.14-1","1.0.29-1","1.1.0-1","1.1.10-1","1.1.18-1","1.1.19-1","1.1.19-2","1.1.23-1","1.1.23-1~bpo9+1","1.1.23-2","1.1.23-3","1.2.1-1","1.2.1-2","1.2.15-1","1.2.17-1","1.2.6-1","1.2.6-2","1.3.10-1","1.3.10-2","1.3.14-1","1.3.7-1","1.4.0-1","1.5.11-1","1.5.2-1","1.5.4-1","1.5.8-1","1.7.0-1","1.7.14-1","1.8.15-1","1.8.15-2","1.8.15-2~bpo10+1","1.8.2-1","1.8.2-2","1.8.4-1","1.8.8-1","1.9.14+ds-1","1.9.14+ds-2","1.9.21+ds-1","1.9.8~slim-1","2.0.1+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.23-1","1.1.23-1build1","1.1.23-2","1.1.23-3","1.2.6-1","1.2.6-2","1.2.6-2build1","1.2.6-2build2","1.2.6-2build3","1.2.15-1","1.2.15-1build1","1.2.17-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.8-1","1.8.15-2","1.9.8~slim-1","1.9.14+ds-1","1.9.14+ds-2","1.9.21+ds-1","2.0.1+ds-1","2.0.1+ds-1build1","2.1.7+ds-2~ubuntu20.04.1","3.1.1+ds-1~ubuntu20.04.1"]}],"products":[{"vendor":"telegram","product":"telegram"},{"vendor":"telegram","product":"telegram_desktop"}],"references":[{"url":"https://github.com/VijayT007/Vulnerability-Database/blob/master/Telegram:CVE-2020-12474","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12474"},{"url":"https://github.com/advisories/GHSA-mf6c-m6cw-6m7x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-12474","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-12474","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-12474","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-12474","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T13:45:28Z","modified":"2024-08-04T11:56:52.071Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-4780","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T13:45:28Z","modified":"2024-08-04T11:56:52Z","updated_at":"2026-11-03T03:07:39.896975Z"}],"ghsa":[{"id":"GHSA-mf6c-m6cw-6m7x","title":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1...","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2022-05-24T17:17:02Z","modified":"2023-01-29T05:02:31Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:06.66766Z"}],"nvd":[{"id":"CVE-2020-12474","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T14:15:11.547Z","modified":"2026-06-17T02:51:52.683Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:59.718774Z"}],"osv":[{"id":"CVE-2020-12474","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T14:15:11.547Z","modified":"2026-10-24T10:30:18.576330872Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"DEBIAN-CVE-2020-12474","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T14:15:11.547Z","modified":"2026-10-26T12:00:29.891541864Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:32.862554Z"},{"id":"UBUNTU-CVE-2020-12474","description":"Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.","status":"published","published":"2020-05-01T14:15:00Z","modified":"2025-10-24T04:48:28Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:22.804634Z"}]}}