{"id":"CVE-2021-27821","state":"PUBLISHED","title":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","publishedAt":"2021-05-25T13:41:33.000Z","updatedAt":"2026-07-09T00:12:50.316Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://openwrt.org/advisory/start","https://openwrt.org/releases/19.07/start"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:15.637Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/27xxx/CVE-2021-27821.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-27821","state":"PUBLISHED","datePublished":"2021-05-25T13:41:33.000Z","dateUpdated":"2026-07-09T00:12:50.316Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2021-03-01T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://openwrt.org/advisory/start"},{"url":"https://openwrt.org/releases/19.07/start"}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2026-07-05T16:30:02.514Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-27821","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability which can lead to attackers carrying out arbitrary code execution."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://openwrt.com","refsource":"MISC","url":"http://openwrt.com"},{"name":"http://openwrtorg.com","refsource":"MISC","url":"http://openwrtorg.com"}]}}},"adp":[{"title":"CVE Program Container","providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-09T00:12:50.316Z"},"timeline":[{"time":"2026-07-08T22:21:05.413Z","lang":"en","value":"Previously entered references were removed because they are not applicable to this CVE Record."}]}]}}}