{"id":"CVE-2021-20745","aliases":["EUVD-2021-8159","GHSA-fgmm-f4rh-2m84"],"status":"published","title":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the...","description":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00964,"percentile":0.62103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2021-06-28T00:50:33Z","modified":"2026-06-17T03:34:21Z","products":[{"vendor":"inkdrop","product":"inkdrop"},{"vendor":"takuya matsuyama","product":"inkdrop"}],"references":[{"url":"https://www.inkdrop.app/","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://docs.inkdrop.app/releases/5.3.1","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://jvn.jp/en/jp/JVN29949691/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20745"},{"url":"https://github.com/advisories/GHSA-fgmm-f4rh-2m84"}],"sources":{"cve":[{"id":"CVE-2021-20745","description":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.","status":"published","published":"2021-06-28T00:50:33Z","modified":"2024-08-03T17:53:21.924Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8159","description":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.","status":"published","published":"2021-06-28T00:50:33Z","modified":"2024-08-03T17:53:21Z","updated_at":"2026-11-03T03:25:08.33351Z"}],"ghsa":[{"id":"GHSA-fgmm-f4rh-2m84","title":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the...","description":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.","status":"published","published":"2022-05-24T19:06:28Z","modified":"2023-01-30T05:00:34Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:46:13.539888Z"}],"nvd":[{"id":"CVE-2021-20745","description":"Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.","status":"published","published":"2021-06-28T01:15:07.477Z","modified":"2026-06-17T03:34:21.6Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}