{"id":"CVE-2021-40532","aliases":["EUVD-2021-27707","GHSA-52wp-gx9w-vjc8"],"status":"published","title":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01252,"percentile":0.69631,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-09-06T20:23:58Z","modified":"2026-08-30T11:45:28Z","products":[{"vendor":"telegram","product":"web_k_alpha"}],"references":[{"url":"https://github.com/morethanwords/tweb/commit/f224e459c36eb96b2cf9dba559a48b1f08d23330","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40532"},{"url":"https://github.com/advisories/GHSA-52wp-gx9w-vjc8"}],"sources":{"cve":[{"id":"CVE-2021-40532","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","status":"published","published":"2021-09-06T20:23:58Z","modified":"2024-08-04T02:44:10.922Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-27707","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","status":"published","published":"2021-09-06T20:23:58Z","modified":"2024-08-04T02:44:10Z","updated_at":"2026-11-03T03:24:20.264881Z"}],"ghsa":[{"id":"GHSA-52wp-gx9w-vjc8","title":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","status":"published","published":"2022-05-24T19:13:02Z","modified":"2023-01-30T05:01:55Z","updated_at":"2026-11-02T14:46:30.744651Z"}],"nvd":[{"id":"CVE-2021-40532","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","status":"published","published":"2021-09-06T21:15:07.413Z","modified":"2026-06-17T04:07:06.23Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:58.05696Z"}],"osv":[{"id":"CVE-2021-40532","description":"Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.","status":"published","published":"2021-09-06T21:15:07.413Z","modified":"2026-08-30T11:45:28.275675359Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:21.249056Z"}]}}