CVE-2021-36872

{"containers": {"cna": {"affected": [{"product": "WordPress Popular Posts", "vendor": "Hector Cabrera", "versions": [{"lessThanOrEqual": "5.3.3", "status": "affected", "version": "5.3.3", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Original researcher - Vlad Visse (Patchstack Red Team)"}], "datePublic": "2021-07-04T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type]."}], "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": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-04-28T16:07:35.841Z"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md"}, {"tags": ["x_refsource_MISC"], "url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability"}], "solutions": [{"lang": "en", "value": "Update to version 5.3.4 or higher."}], "source": {"discovery": "EXTERNAL"}, "title": "WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "audit@patchstack.com", "DATE_PUBLIC": "2021-07-04T20:59:00.000Z", "ID": "CVE-2021-36872", "STATE": "PUBLIC", "TITLE": "WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "WordPress Popular Posts", "version": {"version_data": [{"version_affected": "<=", "version_name": "5.3.3", "version_value": "5.3.3"}]}}]}, "vendor_name": "Hector Cabrera"}]}}, "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 Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type]."}]}, "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://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md", "refsource": "CONFIRM", "url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md"}, {"name": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability", "refsource": "MISC", "url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability"}]}, "solution": [{"lang": "en", "value": "Update to version 5.3.4 or higher."}], "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:01:59.774Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-03-28T16:54:33.992986Z", "id": "CVE-2021-36872", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-28T16:55:01.742Z"}}]}, "cveMetadata": {"assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "assignerShortName": "Patchstack", "cveId": "CVE-2021-36872", "datePublished": "2021-09-23T15:00:55.804Z", "dateReserved": "2021-07-19T00:00:00.000Z", "dateUpdated": "2026-04-28T16:07:35.841Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md", "tags": ["x_refsource_CONFIRM", "x_transferred"]}, {"url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:01:59.774Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-36872", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-03-28T16:54:33.992986Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-28T16:54:29.465Z"}}], "cna": {"title": "WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "value": "Original researcher - Vlad Visse (Patchstack Red Team)"}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "Hector Cabrera", "product": "WordPress Popular Posts", "versions": [{"status": "affected", "version": "5.3.3", "versionType": "custom", "lessThanOrEqual": "5.3.3"}]}], "solutions": [{"lang": "en", "value": "Update to version 5.3.4 or higher."}], "datePublic": "2021-07-04T00:00:00.000Z", "references": [{"url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability", "tags": ["x_refsource_MISC"]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "descriptions": [{"lang": "en", "value": "Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type]."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Cross-site Scripting (XSS)"}]}], "providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2021-09-23T15:00:55.000Z"}, "x_legacyV4Record": {"credit": [{"lang": "eng", "value": "Original researcher - Vlad Visse (Patchstack Red Team)"}], "impact": {"cvss": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}}, "source": {"discovery": "EXTERNAL"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"version": {"version_data": [{"version_name": "5.3.3", "version_value": "5.3.3", "version_affected": "<="}]}, "product_name": "WordPress Popular Posts"}]}, "vendor_name": "Hector Cabrera"}]}}, "solution": [{"lang": "en", "value": "Update to version 5.3.4 or higher."}], "data_type": "CVE", "generator": {"engine": "Vulnogram 0.0.9"}, "references": {"reference_data": [{"url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md", "name": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md", "refsource": "CONFIRM"}, {"url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability", "name": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability", "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "eng", "value": "Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type]."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-79 Cross-site Scripting (XSS)"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-36872", "STATE": "PUBLIC", "TITLE": "WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability", "ASSIGNER": "audit@patchstack.com", "DATE_PUBLIC": "2021-07-04T20:59:00.000Z"}}}}, "cveMetadata": {"cveId": "CVE-2021-36872", "state": "PUBLISHED", "dateUpdated": "2025-03-28T16:55:01.742Z", "dateReserved": "2021-07-19T00:00:00.000Z", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "datePublished": "2021-09-23T15:00:55.804Z", "assignerShortName": "Patchstack"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "WordPress Popular Posts", "vendor": "Hector Cabrera", "versions": [{"lessThanOrEqual": "5.3.3", "status": "affected", "version": "5.3.3", "versionType": "custom"}]}], "source": "audit@patchstack.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wordpress_popular_posts_project:wordpress_popular_posts:*:*:*:*:*:wordpress:*:*", "matchCriteriaId": "ABBA2087-1173-4E73-9550-BFE7695987F7", "versionEndIncluding": "5.3.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type]."}, {"lang": "es", "value": "Una vulnerabilidad de tipo Cross-Site Scripting (XSS) Persistente Autenticado en el plugin Popular Posts de WordPress (versiones anteriores a 5.3.3, incluy\u00e9ndola). Vulnerable en &amp;widget-wpp[2][post_type]"}], "id": "CVE-2021-36872", "lastModified": "2026-06-17T03:59:33.140", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "audit@patchstack.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-36872", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-28T16:54:33.992986Z", "version": "2.0.3"}}]}, "published": "2021-09-23T15:15:07.840", "references": [{"source": "audit@patchstack.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md"}, {"source": "audit@patchstack.com", "tags": ["Third Party Advisory"], "url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability"}], "sourceIdentifier": "audit@patchstack.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "audit@patchstack.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}