Vulnerability-Lookup

CVE-2021-20813 (GCVE-0-2021-20813)

Vulnerability from cvelistv5 – Published: 2021-08-26 01:20 – Updated: 2024-08-03 17:53

Summary

Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

Severity

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

Cross-site scripting

Assigner

jpcert jpcert root Scorecard

References

2 references

URL	Tags
https://movabletype.org/news/2021/08/mt-780-681-r…	x_refsource_MISC
https://jvn.jp/en/jp/JVN97545738/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
Six Apart Ltd.	Movable Type	Affected: Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)	guessed

Show details on NVD website

JSON

To clipboard

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}

CNVD-2022-22647

Vulnerability from cnvd - Published: 2022-03-25

Title

Six Apart Movable Type跨站脚本漏洞（CNVD-2022-22647）

Description

Six Apart Movable Type（MT）是美国Six Apart公司的一套博客系统。该系统包括多用户、评论、引用和主题等功能。 Six Apart Movable Type存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证，攻击者可利用该漏洞通过未指定的向量注入任意脚本或 HTML。

Severity

中

Patch Name

Six Apart Movable Type跨站脚本漏洞（CNVD-2022-22647）的补丁

Patch Description

Six Apart Movable Type（MT）是美国Six Apart公司的一套博客系统。该系统包括多用户、评论、引用和主题等功能。 Six Apart Movable Type存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证，攻击者可利用该漏洞通过未指定的向量注入任意脚本或 HTML。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://movabletype.org/news/2021/08/mt-780-681-released.html

Reference

https://movabletype.org/news/2021/08/mt-780-681-released.html

Impacted products

Name
['Six Apart Movable Type <=7 r.4903', 'Six Apart Movable Type Advanced <=7 r.4903']

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-20813",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-20813"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-22647",
  "openTime": "2022-03-25",
  "patchDescription": "Six Apart Movable Type\uff08MT\uff09\u662f\u7f8e\u56fdSix Apart\u516c\u53f8\u7684\u4e00\u5957\u535a\u5ba2\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u5305\u62ec\u591a\u7528\u6237\u3001\u8bc4\u8bba\u3001\u5f15\u7528\u548c\u4e3b\u9898\u7b49\u529f\u80fd\u3002\r\n\r\nSix Apart Movable Type\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eWEB\u5e94\u7528\u7f3a\u5c11\u5bf9\u5ba2\u6237\u7aef\u6570\u636e\u7684\u6b63\u786e\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u672a\u6307\u5b9a\u7684\u5411\u91cf\u6ce8\u5165\u4efb\u610f\u811a\u672c\u6216 HTML\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Six Apart Movable Type\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-22647\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Six Apart Movable Type \u003c=7 r.4903",
      "Six Apart Movable Type Advanced \u003c=7 r.4903"
    ]
  },
  "referenceLink": "https://movabletype.org/news/2021/08/mt-780-681-released.html",
  "serverity": "\u4e2d",
  "submitTime": "2021-08-27",
  "title": "Six Apart Movable Type\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-22647\uff09"
}

FKIE_CVE-2021-20813

Vulnerability from fkie_nvd - Published: 2021-08-26 02:15 - Updated: 2026-06-17 03:34

Severity

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

URL	Tags
vultures@jpcert.or.jp	https://jvn.jp/en/jp/JVN97545738/index.html	Third Party Advisory
vultures@jpcert.or.jp	https://movabletype.org/news/2021/08/mt-780-681-released.html	Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://jvn.jp/en/jp/JVN97545738/index.html	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://movabletype.org/news/2021/08/mt-780-681-released.html	Release Notes, Vendor Advisory

Impacted products

	Vendor	Product	Version
	sixapart	movable_type	*
	sixapart	movable_type	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Movable Type",
          "vendor": "Six Apart Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)"
            }
          ]
        }
      ],
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sixapart:movable_type:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "D37106C9-92CD-44A8-A80B-57754207AE80",
              "versionEndExcluding": "7.8.0",
              "versionStartIncluding": "7.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:*",
              "matchCriteriaId": "5CA5A16F-B42D-4DC7-B9A0-5CA49B05DA7B",
              "versionEndExcluding": "7.8.0",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de tipo cross-site scripting en la pantalla Edit de Content Data de Movable Type (Movable Type 7 versiones r.4903 y anteriores (Movable Type 7 Series) y Movable Type Advanced 7 versiones r.4903 y anteriores (Movable Type Advanced 7 Series)), permite a atacantes remotos inyectar script arbitrario o HTML por medio de vectores no especificados."
    }
  ],
  "id": "CVE-2021-20813",
  "lastModified": "2026-06-17T03:34:29.677",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "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": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-26T02:15:11.657",
  "references": [
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/jp/JVN97545738/index.html"
    },
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://movabletype.org/news/2021/08/mt-780-681-released.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/jp/JVN97545738/index.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://movabletype.org/news/2021/08/mt-780-681-released.html"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-8P38-CJXC-8FXX

Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2022-05-24 19:12

Details

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-20813"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-08-26T02:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.",
  "id": "GHSA-8p38-cjxc-8fxx",
  "modified": "2022-05-24T19:12:20Z",
  "published": "2022-05-24T19:12:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20813"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN97545738/index.html"
    },
    {
      "type": "WEB",
      "url": "https://movabletype.org/news/2021/08/mt-780-681-released.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GSD-2021-20813

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-20813

Aliases

CVE-2021-20813

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-20813",
    "description": "Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.",
    "id": "GSD-2021-20813"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20813"
      ],
      "details": "Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.",
      "id": "GSD-2021-20813",
      "modified": "2023-12-13T01:23:12.525141Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "vultures@jpcert.or.jp",
        "ID": "CVE-2021-20813",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Movable Type",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Six Apart Ltd."
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Cross-site scripting"
              }
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        ]
      },
      "references": {
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          {
            "name": "https://movabletype.org/news/2021/08/mt-780-681-released.html",
            "refsource": "MISC",
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          },
          {
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            "refsource": "MISC",
            "url": "https://jvn.jp/en/jp/JVN97545738/index.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:sixapart:movable_type:*:*:*:*:-:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.8.0",
                "versionStartIncluding": "7.0",
                "vulnerable": true
              },
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            }
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            }
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          "cvssV2": {
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            "availabilityImpact": "NONE",
            "baseScore": 4.3,
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            "integrityImpact": "PARTIAL",
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          "userInteractionRequired": true
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2021-09-01T18:44Z",
      "publishedDate": "2021-08-26T02:15Z"
    }
  }
}

JVNDB-2021-000079

Vulnerability from jvndb - Published: 2021-08-25 05:54 - Updated:2021-08-25 05:54

Severity

6.1 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

Multiple cross-site scripting vulnerabilities in Movable Type

Details

Movable Type provided by Six Apart Ltd. contains multiple cross-site scripting vulnerabilities listed below. * Cross-site scripting vulnerability in Search screen (CWE-79) - CVE-2021-20808 * Cross-site scripting vulnerability in Create screens of Entry, Page, and Content Type (CWE-79) - CVE-2021-20809 * Cross-site scripting vulnerability in Website Management screen (CWE-79) - CVE-2021-20810 * Cross-site scripting vulnerability in List of Assets screen (CWE-79) - CVE-2021-20811 * Cross-site scripting vulnerability in Setting screen of Server Sync (CWE-79) - CVE-2021-20812 * Cross-site scripting vulnerability in Edit screen of Content Data (CWE-79) - CVE-2021-20813 * Cross-site scripting vulnerability in Setting screen of ContentType Information Widget Plugin (CWE-79) - CVE-2021-20814 * Cross-site scripting vulnerability in Edit Boilerplate screen (CWE-79) - CVE-2021-20815 Six Apart Ltd. reported these vulnerabilities to JPCERT/CC to notify users of the solutions through JVN. JPCERT/CC and Six Apart Ltd. coordinated under the Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN97545738/index.html
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20808
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20809
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20810
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20811
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20812
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20813
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20814
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20815
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20808
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20809
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20810
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20811
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20812
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20813
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20814
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20815
	Cross-site Scripting(CWE-79)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

Six Apart, Ltd.

Movable Type

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000079.html",
  "dc:date": "2021-08-25T14:54+09:00",
  "dcterms:issued": "2021-08-25T14:54+09:00",
  "dcterms:modified": "2021-08-25T14:54+09:00",
  "description": "Movable Type provided by Six Apart Ltd. contains multiple cross-site scripting vulnerabilities listed below.\r\n* Cross-site scripting vulnerability in Search screen (CWE-79) - CVE-2021-20808\r\n* Cross-site scripting vulnerability in Create screens of Entry, Page, and Content Type (CWE-79) - CVE-2021-20809\r\n* Cross-site scripting vulnerability in Website Management screen (CWE-79) - CVE-2021-20810\r\n* Cross-site scripting vulnerability in List of Assets screen (CWE-79) - CVE-2021-20811\r\n* Cross-site scripting vulnerability in Setting screen of Server Sync (CWE-79) - CVE-2021-20812\r\n* Cross-site scripting vulnerability in Edit screen of Content Data (CWE-79) - CVE-2021-20813\r\n* Cross-site scripting vulnerability in Setting screen of ContentType Information Widget Plugin (CWE-79) - CVE-2021-20814\r\n* Cross-site scripting vulnerability in Edit Boilerplate screen (CWE-79) - CVE-2021-20815\r\n\r\nSix Apart Ltd. reported these vulnerabilities to JPCERT/CC to notify users of the solutions through JVN. JPCERT/CC and Six Apart Ltd. coordinated under the Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000079.html",
  "sec:cpe": {
    "#text": "cpe:/a:sixapart:movable_type",
    "@product": "Movable Type",
    "@vendor": "Six Apart, Ltd.",
    "@version": "2.2"
  },
  "sec:cvss": [
    {
      "@score": "2.6",
      "@severity": "Low",
      "@type": "Base",
      "@vector": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
      "@version": "2.0"
    },
    {
      "@score": "6.1",
      "@severity": "Medium",
      "@type": "Base",
      "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "@version": "3.0"
    }
  ],
  "sec:identifier": "JVNDB-2021-000079",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN97545738/index.html",
      "@id": "JVN#97545738",
      "@source": "JVN"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20808",
      "@id": "CVE-2021-20808",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20809",
      "@id": "CVE-2021-20809",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20810",
      "@id": "CVE-2021-20810",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20811",
      "@id": "CVE-2021-20811",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20812",
      "@id": "CVE-2021-20812",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20813",
      "@id": "CVE-2021-20813",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20814",
      "@id": "CVE-2021-20814",
      "@source": "CVE"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20815",
      "@id": "CVE-2021-20815",
      "@source": "CVE"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20808",
      "@id": "CVE-2021-20808",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20809",
      "@id": "CVE-2021-20809",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20810",
      "@id": "CVE-2021-20810",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20811",
      "@id": "CVE-2021-20811",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20812",
      "@id": "CVE-2021-20812",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20813",
      "@id": "CVE-2021-20813",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20814",
      "@id": "CVE-2021-20814",
      "@source": "NVD"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20815",
      "@id": "CVE-2021-20815",
      "@source": "NVD"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-79",
      "@title": "Cross-site Scripting(CWE-79)"
    }
  ],
  "title": "Multiple cross-site scripting vulnerabilities in Movable Type"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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CVE-2021-20813 (GCVE-0-2021-20813)

CNVD-2022-22647

FKIE_CVE-2021-20813

GHSA-8P38-CJXC-8FXX

GSD-2021-20813

JVNDB-2021-000079

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Related by attack behaviour