{"id":"CVE-2021-36551","aliases":["EUVD-2021-23153","GHSA-qc2r-j24r-r6qm"],"status":"published","title":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the...","description":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00503,"percentile":0.4356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-10-28T19:11:12Z","modified":"2026-06-17T03:58:55Z","products":[{"vendor":"tiki","product":"tikiwiki_cms\\/groupware"}],"references":[{"url":"https://github.com/r0ck3t1973/xss_payload/issues/7","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36551"},{"url":"https://github.com/advisories/GHSA-qc2r-j24r-r6qm"}],"sources":{"cve":[{"id":"CVE-2021-36551","description":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.","status":"published","published":"2021-10-28T19:11:12Z","modified":"2024-08-04T00:54:51.589Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2021-23153","description":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.","status":"published","published":"2021-10-28T19:11:12Z","modified":"2024-08-04T00:54:51Z","updated_at":"2026-11-03T03:24:29.329171Z"}],"ghsa":[{"id":"GHSA-qc2r-j24r-r6qm","title":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the...","description":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.","status":"published","published":"2022-05-24T19:18:59Z","modified":"2023-01-30T05:03:12Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:47.501364Z"}],"nvd":[{"id":"CVE-2021-36551","description":"TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.","status":"published","published":"2021-10-28T20:15:07.627Z","modified":"2026-06-17T03:58:55.74Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}