{"id":"CVE-2021-21973","state":"PUBLISHED","title":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with networ","description":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).","publishedAt":"2021-02-24T16:42:02.000Z","updatedAt":"2025-10-21T23:25:54.167Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"vmware","products":["n/a VMware vCenter Server","n/a VMware Cloud Foundation"],"affected":[{"vendor":"n/a","product":"VMware vCenter Server","versions":[{"version":"7.x before 7.0 U1c","status":"affected"},{"version":"6.7 before 6.7 U3l","status":"affected"},{"version":"6.5 before 6.5 U3n","status":"affected"}]},{"vendor":"n/a","product":"VMware Cloud Foundation","versions":[{"version":"4.x before 4.2","status":"affected"},{"version":"3.x before 3.10.1.2","status":"affected"}]}],"references":["https://www.vmware.com/security/advisories/VMSA-2021-0002.html","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21973"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T19:47:59.168Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/21xxx/CVE-2021-21973.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-21973","state":"PUBLISHED","datePublished":"2021-02-24T16:42:02.000Z","dateUpdated":"2025-10-21T23:25:54.167Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2021-01-04T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2)."}],"affected":[{"vendor":"n/a","product":"VMware vCenter Server","versions":[{"version":"7.x before 7.0 U1c","status":"affected"},{"version":"6.7 before 6.7 U3l","status":"affected"},{"version":"6.5 before 6.5 U3n","status":"affected"}]},{"vendor":"n/a","product":"VMware Cloud Foundation","versions":[{"version":"4.x before 4.2","status":"affected"},{"version":"3.x before 3.10.1.2","status":"affected"}]}],"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","tags":["x_refsource_CONFIRM"]}],"problemTypes":[{"descriptions":[{"description":"SSRF vulnerability","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"vmware","dateUpdated":"2021-02-24T16:42:02.000Z","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@vmware.com","ID":"CVE-2021-21973","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"VMware vCenter Server","version":{"version_data":[{"version_value":"7.x before 7.0 U1c"},{"version_value":"6.7 before 6.7 U3l"},{"version_value":"6.5 before 6.5 U3n"}]}},{"product_name":"VMware Cloud Foundation","version":{"version_data":[{"version_value":"4.x before 4.2"},{"version_value":"3.x before 3.10.1.2"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2)."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"SSRF vulnerability"}]}]},"references":{"reference_data":[{"name":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","refsource":"CONFIRM","url":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T18:30:23.450Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21973","tags":["government-resource"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"id":"CVE-2021-21973","role":"CISA Coordinator","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-02-16T16:16:46.429372Z"}}},{"other":{"type":"kev","content":{"dateAdded":"2022-03-07","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21973"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","type":"CWE","description":"CWE-918 Server-Side Request Forgery (SSRF)"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-21T23:25:54.167Z"},"timeline":[{"time":"2022-03-07T00:00:00.000Z","lang":"en","value":"CVE-2021-21973 added to CISA KEV"}]}]}}}