{"id":"CVE-2021-20764","aliases":["EUVD-2021-8176","GHSA-w75q-4cfj-fmmg"],"status":"published","title":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows...","description":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00993,"percentile":0.62907,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-08-18T05:36:07Z","modified":"2026-06-17T03:34:23Z","products":[{"vendor":"cybozu","product":"garoon"},{"vendor":"cybozu, inc.","product":"cybozu garoon"}],"references":[{"url":"https://cs.cybozu.co.jp/2021/007206.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/jp/JVN54794245/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20764"},{"url":"https://github.com/advisories/GHSA-w75q-4cfj-fmmg"}],"sources":{"cve":[{"id":"CVE-2021-20764","description":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.","status":"published","published":"2021-08-18T05:36:07Z","modified":"2024-08-03T17:53:22.099Z","updated_at":"2026-11-02T14:32:55.19484Z"}],"euvd":[{"id":"EUVD-2021-8176","description":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.","status":"published","published":"2021-08-18T05:36:07Z","modified":"2024-08-03T17:53:22Z","updated_at":"2026-11-03T03:25:08.33351Z"}],"ghsa":[{"id":"GHSA-w75q-4cfj-fmmg","title":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows...","description":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.","status":"published","published":"2022-05-24T19:11:36Z","modified":"2023-01-30T05:01:33Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:46:26.483285Z"}],"nvd":[{"id":"CVE-2021-20764","description":"Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.","status":"published","published":"2021-08-18T06:15:07.01Z","modified":"2026-06-17T03:34:23.48Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:57.318236Z"}]}}