{"id":"CVE-2021-3337","aliases":["EUVD-2021-26668","GHSA-2486-f4hq-9m5c"],"status":"published","title":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass...","description":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.11602,"percentile":0.96075,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-863"],"published":"2021-01-28T19:32:59Z","modified":"2026-06-17T04:04:57Z","exploits":[{"source":"exploitdb","id":"EDB-49496","title":"MyBB Hide Thread Content Plugin 1.0 - Information Disclosure","type":"webapps","platform":"php","date":"2021-01-29","url":"https://www.exploit-db.com/exploits/49496"}],"products":[{"vendor":"hide_thread_content_project","product":"hide_thread_content"}],"references":[{"url":"https://github.com/snlbaral/Hide-Thread-Content/issues/1","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/161185/MyBB-Hide-Thread-Content-1.0-Information-Disclosure.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3337"},{"url":"https://github.com/advisories/GHSA-2486-f4hq-9m5c"}],"sources":{"cve":[{"id":"CVE-2021-3337","description":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.","status":"published","published":"2021-01-28T19:32:59Z","modified":"2024-08-03T16:53:17.3Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26668","description":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.","status":"published","published":"2021-01-28T19:32:59Z","modified":"2024-08-03T16:53:17Z","updated_at":"2026-11-03T03:25:13.052236Z"}],"ghsa":[{"id":"GHSA-2486-f4hq-9m5c","title":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass...","description":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.","status":"published","published":"2022-05-24T17:40:33Z","modified":"2023-01-29T05:05:11Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:45:43.934947Z"}],"nvd":[{"id":"CVE-2021-3337","description":"The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.","status":"published","published":"2021-01-28T20:15:13.307Z","modified":"2026-06-17T04:04:57.83Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:49.660551Z"}]}}