{"id":"CVE-2021-36873","state":"PUBLISHED","title":"WordPress iQ Block Country plugin <= 1.2.11 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage.","publishedAt":"2021-09-23T15:07:44.186Z","updatedAt":"2026-04-28T16:07:35.893Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","source":"Patchstack"},"assigner":"Patchstack","products":["Webence iQ Block Country"],"affected":[{"vendor":"Webence","product":"iQ Block Country","versions":[{"version":"1.2.11","status":"affected","lessThanOrEqual":"1.2.11","versionType":"custom"}]}],"references":["https://wordpress.org/plugins/iq-block-country/#developers","https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T19:48:44.655Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/36xxx/CVE-2021-36873.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-36873","state":"PUBLISHED","datePublished":"2021-09-23T15:07:44.186Z","dateUpdated":"2026-04-28T16:07:35.893Z","assignerShortName":"Patchstack","assignerOrgId":"21595511-bba5-4825-b968-b78d1f9984a3","dateReserved":"2021-07-19T00:00:00.000Z"},"containers":{"cna":{"title":"WordPress iQ Block Country plugin <= 1.2.11 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability","descriptions":[{"lang":"en","value":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage."}],"affected":[{"vendor":"Webence","product":"iQ Block Country","versions":[{"version":"1.2.11","status":"affected","lessThanOrEqual":"1.2.11","versionType":"custom"}]}],"references":[{"url":"https://wordpress.org/plugins/iq-block-country/#developers","tags":["x_refsource_CONFIRM"]},{"url":"https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Cross-site Scripting (XSS)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Patchstack","orgId":"21595511-bba5-4825-b968-b78d1f9984a3","dateUpdated":"2026-04-28T16:07:35.893Z"},"credits":[{"lang":"en","value":"Original researcher - Vlad Visse (Patchstack Red Team)"}],"datePublic":"2021-09-22T00:00:00.000Z","solutions":[{"lang":"en","value":"Update to version 1.2.12 or higher."}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"audit@patchstack.com","DATE_PUBLIC":"2021-09-22T23:26:00.000Z","ID":"CVE-2021-36873","STATE":"PUBLIC","TITLE":"WordPress iQ Block Country plugin <= 1.2.11 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"iQ Block Country","version":{"version_data":[{"version_affected":"<=","version_name":"1.2.11","version_value":"1.2.11"}]}}]},"vendor_name":"Webence"}]}},"credit":[{"lang":"eng","value":"Original researcher - Vlad Visse (Patchstack Red Team)"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-79 Cross-site Scripting (XSS)"}]}]},"references":{"reference_data":[{"name":"https://wordpress.org/plugins/iq-block-country/#developers","refsource":"CONFIRM","url":"https://wordpress.org/plugins/iq-block-country/#developers"},{"name":"https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability","refsource":"MISC","url":"https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability"}]},"solution":[{"lang":"en","value":"Update to version 1.2.12 or higher."}],"source":{"discovery":"EXTERNAL"}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://wordpress.org/plugins/iq-block-country/#developers","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T01:01:59.780Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-28T16:53:50.454988Z","id":"CVE-2021-36873","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-28T16:53:53.956Z"}}]}}}