{"id":"CVE-2021-41974","aliases":["EUVD-2021-28964","GHSA-rj7f-mcvj-v87g"],"status":"published","title":"Tad Book3 - Improper Authorization","description":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01262,"percentile":0.70076,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285","CWE-306","CWE-732"],"published":"2021-10-08T15:15:41Z","modified":"2026-06-17T04:09:06Z","products":[{"vendor":"tad","product":"tad book3"},{"vendor":"tad_book3_project","product":"tad_book3"}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-5173-e21ba-1.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41974"},{"url":"https://github.com/advisories/GHSA-rj7f-mcvj-v87g"}],"sources":{"cve":[{"id":"CVE-2021-41974","title":"Tad Book3 - Improper Authorization","description":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.","status":"published","published":"2021-10-08T15:15:41.083Z","modified":"2024-09-17T01:00:56.249Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-28964","description":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.","status":"published","published":"2021-10-08T15:15:41Z","modified":"2024-09-17T01:00:56Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T00:28:53.686001Z"}],"ghsa":[{"id":"GHSA-rj7f-mcvj-v87g","title":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the...","description":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.","status":"published","published":"2022-05-24T19:17:02Z","modified":"2023-01-27T05:04:01Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-285","CWE-306","CWE-732"],"updated_at":"2026-11-02T14:42:22.043841Z"}],"nvd":[{"id":"CVE-2021-41974","description":"Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.","status":"published","published":"2021-10-08T16:15:08.437Z","modified":"2026-06-17T04:09:06.397Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-285","CWE-306"],"updated_at":"2026-11-02T14:06:59.689345Z"}]}}