GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-36833 (GCVE-0-2021-36833)

Vulnerability from cvelistv5 – Published: 2022-05-20 19:55 – Updated: 2026-04-28 16:07
VLAI
Title
WordPress MC4WP plugin <= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability
Summary
Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin <= 4.8.6 at WordPress.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-20 19:30 UTC
CWE
  • CWE-79 - Cross-site Scripting (XSS)
Assigner
References
Impacted products
Vendor Product Version CPE status
ibericode MC4WP: Mailchimp for WordPress Affected: <= 4.8.6 , ≤ 4.8.6 (custom)
guessed Create a notification for this product.
Date Public
2022-03-02 00:00
Credits
Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:01:59.724Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://wordpress.org/plugins/mailchimp-for-wp/#developers"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-36833",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-20T19:30:06.217187Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-20T20:22:03.315Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "MC4WP: Mailchimp for WordPress",
          "vendor": "ibericode",
          "versions": [
            {
              "lessThanOrEqual": "4.8.6",
              "status": "affected",
              "version": "\u003c= 4.8.6",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)"
        }
      ],
      "datePublic": "2022-03-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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": {
        "dateUpdated": "2026-04-28T16:07:30.992Z",
        "orgId": "21595511-bba5-4825-b968-b78d1f9984a3",
        "shortName": "Patchstack"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://wordpress.org/plugins/mailchimp-for-wp/#developers"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update to 4.8.7 or higher version."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "audit@patchstack.com",
          "DATE_PUBLIC": "2022-03-02T07:15:00.000Z",
          "ID": "CVE-2021-36833",
          "STATE": "PUBLIC",
          "TITLE": "WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "MC4WP: Mailchimp for WordPress",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_name": "\u003c= 4.8.6",
                            "version_value": "4.8.6"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "ibericode"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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/mailchimp-for-wp/#developers",
              "refsource": "CONFIRM",
              "url": "https://wordpress.org/plugins/mailchimp-for-wp/#developers"
            },
            {
              "name": "https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability",
              "refsource": "CONFIRM",
              "url": "https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Update to 4.8.7 or higher version."
          }
        ],
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3",
    "assignerShortName": "Patchstack",
    "cveId": "CVE-2021-36833",
    "datePublished": "2022-05-20T19:55:54.898Z",
    "dateReserved": "2021-07-19T00:00:00.000Z",
    "dateUpdated": "2026-04-28T16:07:30.992Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-36833",
      "date": "2026-09-15",
      "epss": "0.00509",
      "percentile": "0.41978"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:mailchimp_for_wordpress_project:mailchimp_for_wordpress:*:*:*:*:*:wordpress:*:*\", \"versionEndIncluding\": \"4.8.6\", \"matchCriteriaId\": \"A970DABB-4352-47E4-8F82-E0C9C0D5B43A\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress.\"}, {\"lang\": \"es\", \"value\": \"Una vulnerabilidad de tipo Cross-Site Scripting (XSS) almacenado y autenticado (rol de administrador o usuario superior) en el plugin MC4WP de ibericode versiones anteriores a 4.8.6 incluy\\u00e9ndola, en WordPress\"}]",
      "id": "CVE-2021-36833",
      "lastModified": "2024-11-21T06:14:10.300",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"audit@patchstack.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.7, \"impactScore\": 2.7}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.7, \"impactScore\": 2.7}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:S/C:N/I:P/A:N\", \"baseScore\": 3.5, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"SINGLE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"LOW\", \"exploitabilityScore\": 6.8, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2022-05-20T20:15:09.747",
      "references": "[{\"url\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"source\": \"audit@patchstack.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"source\": \"audit@patchstack.com\", \"tags\": [\"Product\"]}, {\"url\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Product\"]}]",
      "sourceIdentifier": "audit@patchstack.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"audit@patchstack.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-79\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-36833\",\"sourceIdentifier\":\"audit@patchstack.com\",\"published\":\"2022-05-20T20:15:09.747\",\"lastModified\":\"2026-01-20T19:09:46.400\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de tipo Cross-Site Scripting (XSS) almacenado y autenticado (rol de administrador o usuario superior) en el plugin MC4WP de ibericode versiones anteriores a 4.8.6 incluy\u00e9ndola, en WordPress\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"audit@patchstack.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.7,\"impactScore\":2.7},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.7,\"impactScore\":2.7}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:S/C:N/I:P/A:N\",\"baseScore\":3.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":6.8,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"audit@patchstack.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ibericode:mailchimp_for_wordpress:*:*:*:*:*:wordpress:*:*\",\"versionEndIncluding\":\"4.8.6\",\"matchCriteriaId\":\"39D615A5-B92A-446C-97C6-05216A21C9B0\"}]}]}],\"references\":[{\"url\":\"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\",\"source\":\"audit@patchstack.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://wordpress.org/plugins/mailchimp-for-wp/#developers\",\"source\":\"audit@patchstack.com\",\"tags\":[\"Product\"]},{\"url\":\"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://wordpress.org/plugins/mailchimp-for-wp/#developers\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Product\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-05-29T04:10:17+00:00",
      "cve": "CVE-2021-36833",
      "id": "CVE-2021-36833",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-36833.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T01:01:59.724Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-36833\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-20T19:30:06.217187Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-20T19:30:07.596Z\"}}], \"cna\": {\"title\": \"WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"value\": \"Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)\"}], \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 4.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"ibericode\", \"product\": \"MC4WP: Mailchimp for WordPress\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c= 4.8.6\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"4.8.6\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Update to 4.8.7 or higher version.\"}], \"datePublic\": \"2022-03-02T00:00:00.000Z\", \"references\": [{\"url\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress.\"}], \"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\": \"2022-05-20T19:55:54.000Z\"}, \"x_legacyV4Record\": {\"credit\": [{\"lang\": \"eng\", \"value\": \"Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)\"}], \"impact\": {\"cvss\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 4.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"LOW\"}}, \"source\": {\"discovery\": \"EXTERNAL\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_name\": \"\u003c= 4.8.6\", \"version_value\": \"4.8.6\", \"version_affected\": \"\u003c=\"}]}, \"product_name\": \"MC4WP: Mailchimp for WordPress\"}]}, \"vendor_name\": \"ibericode\"}]}}, \"solution\": [{\"lang\": \"en\", \"value\": \"Update to 4.8.7 or higher version.\"}], \"data_type\": \"CVE\", \"generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"references\": {\"reference_data\": [{\"url\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"name\": \"https://wordpress.org/plugins/mailchimp-for-wp/#developers\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"name\": \"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability\", \"refsource\": \"CONFIRM\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode\u0027s MC4WP plugin \u003c= 4.8.6 at WordPress.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-79 Cross-site Scripting (XSS)\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-36833\", \"STATE\": \"PUBLIC\", \"TITLE\": \"WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability\", \"ASSIGNER\": \"audit@patchstack.com\", \"DATE_PUBLIC\": \"2022-03-02T07:15:00.000Z\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-36833\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-20T20:22:03.315Z\", \"dateReserved\": \"2021-07-19T00:00:00.000Z\", \"assignerOrgId\": \"21595511-bba5-4825-b968-b78d1f9984a3\", \"datePublished\": \"2022-05-20T19:55:54.898Z\", \"assignerShortName\": \"Patchstack\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.