{"api_version":"1","generated_at":"2026-06-14T18:24:08+00:00","cve":"CVE-2021-4255","urls":{"html":"https://cve.report/CVE-2021-4255","api":"https://cve.report/api/cve/CVE-2021-4255.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-4255","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-4255"},"summary":{"title":"CVE-2021-4255","description":"A vulnerability was found in ctrlo lenio and classified as problematic. Affected by this issue is some unknown functionality of the file views/contractor.tt. The manipulation of the argument contractor.name leads to cross site scripting. The attack may be launched remotely. The name of the patch is e1646d5cd0a2fbab9eb505196dd2ca1c9e4cdd97. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216212.","state":"PUBLIC","assigner":"cna@vuldb.com","published_at":"2022-12-18 22:15:00","updated_at":"2023-11-07 03:40:00"},"problem_types":["CWE-707"],"metrics":[],"references":[{"url":"https://vuldb.com/?id.216212","name":"N/A","refsource":"N/A","tags":[],"title":"CVE-2021-4255 | ctrlo lenio contractor.tt cross site scripting","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/ctrlo/lenio/commit/e1646d5cd0a2fbab9eb505196dd2ca1c9e4cdd97","name":"N/A","refsource":"N/A","tags":[],"title":"Fix more XSS issues · ctrlo/lenio@e1646d5 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-4255","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4255","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"4255","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ctrlo","cpe5":"lenio","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-4255","TITLE":"ctrlo lenio contractor.tt cross site scripting","REQUESTER":"cna@vuldb.com","ASSIGNER":"cna@vuldb.com","STATE":"PUBLIC"},"generator":"vuldb.com","affects":{"vendor":{"vendor_data":[{"vendor_name":"ctrlo","product":{"product_data":[{"product_name":"lenio","version":{"version_data":[{"version_value":"n/a"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-707 Improper Neutralization -> CWE-74 Injection -> CWE-79 Cross Site Scripting"}]}]},"description":{"description_data":[{"lang":"eng","value":"A vulnerability was found in ctrlo lenio and classified as problematic. Affected by this issue is some unknown functionality of the file views/contractor.tt. The manipulation of the argument contractor.name leads to cross site scripting. The attack may be launched remotely. The name of the patch is e1646d5cd0a2fbab9eb505196dd2ca1c9e4cdd97. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216212."}]},"impact":{"cvss":{"version":"3.1","baseScore":"3.5","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N"}},"references":{"reference_data":[{"url":"https://github.com/ctrlo/lenio/commit/e1646d5cd0a2fbab9eb505196dd2ca1c9e4cdd97","refsource":"MISC","name":"https://github.com/ctrlo/lenio/commit/e1646d5cd0a2fbab9eb505196dd2ca1c9e4cdd97"},{"url":"https://vuldb.com/?id.216212","refsource":"MISC","name":"https://vuldb.com/?id.216212"}]}},"nvd":{"publishedDate":"2022-12-18 22:15:00","lastModifiedDate":"2023-11-07 03:40:00","problem_types":["CWE-707"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ctrlo:lenio:*:*:*:*:*:*:*:*","versionEndExcluding":"2021-02-08","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}