Vulnerability-Lookup

CVE-2022-21706 (GCVE-0-2022-21706)

Vulnerability from cvelistv5 – Published: 2022-02-25 23:25 – Updated: 2025-04-23 19:00

Title

Multi-use invitations can grant access to other organizations in Zulip

Summary

Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users' email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com).

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:57 UTC

CWE

CWE-863 - Incorrect Authorization
CWE-284 - Improper Access Control

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7926 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/zulip/zulip/security/advisorie…	x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/88917019f03…	x_refsource_MISC
https://blog.zulip.com/2022/02/25/zulip-cloud-inv…	x_refsource_MISC
https://blog.zulip.com/2022/02/25/zulip-server-4-…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
zulip	zulip	Affected: >= 2.0.0, < 4.10	guessed

Show details on NVD website

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CNVD-2022-15523

Vulnerability from cnvd - Published: 2022-03-01

Title

Zulip server存在未明漏洞（CNVD-2022-15523）

Description

Zulip server是美国Zulip公司的一款开源的团队聊天应用程序。 Zulip server存在安全漏洞，该漏洞源于驻留多个组织的zlip Server部署很容易受到攻击，在一个组织中创建的邀请(可能是一个具有较高权限的角色)可以被用来加入任何其他组织。这绕过了对用户电子邮件地址所需域的任何限制，可以用来获得对只有邀请才能访问的组织的访问权。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Zulip server存在未明漏洞（CNVD-2022-15523）的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-21706

Impacted products

Name
Zulip Zulip Server

Show details on source website

JSON

To clipboard

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  "number": "CNVD-2022-15523",
  "openTime": "2022-03-01",
  "patchDescription": "Zulip server\u662f\u7f8e\u56fdZulip\u516c\u53f8\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u56e2\u961f\u804a\u5929\u5e94\u7528\u7a0b\u5e8f\u3002\r\n\r\nZulip server\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u9a7b\u7559\u591a\u4e2a\u7ec4\u7ec7\u7684zlip Server\u90e8\u7f72\u5f88\u5bb9\u6613\u53d7\u5230\u653b\u51fb\uff0c\u5728\u4e00\u4e2a\u7ec4\u7ec7\u4e2d\u521b\u5efa\u7684\u9080\u8bf7(\u53ef\u80fd\u662f\u4e00\u4e2a\u5177\u6709\u8f83\u9ad8\u6743\u9650\u7684\u89d2\u8272)\u53ef\u4ee5\u88ab\u7528\u6765\u52a0\u5165\u4efb\u4f55\u5176\u4ed6\u7ec4\u7ec7\u3002\u8fd9\u7ed5\u8fc7\u4e86\u5bf9\u7528\u6237\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u6240\u9700\u57df\u7684\u4efb\u4f55\u9650\u5236\uff0c\u53ef\u4ee5\u7528\u6765\u83b7\u5f97\u5bf9\u53ea\u6709\u9080\u8bf7\u624d\u80fd\u8bbf\u95ee\u7684\u7ec4\u7ec7\u7684\u8bbf\u95ee\u6743\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "Zulip server\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2022-15523\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Zulip Zulip Server"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2022-21706",
  "serverity": "\u4e2d",
  "submitTime": "2022-03-01",
  "title": "Zulip server\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2022-15523\uff09"
}

FKIE_CVE-2022-21706

Vulnerability from fkie_nvd - Published: 2022-02-26 00:15 - Updated: 2026-06-17 04:26

Severity

7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/	Vendor Advisory
security-advisories@github.com	https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706	Vendor Advisory
security-advisories@github.com	https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc	Third Party Advisory

Impacted products

	Vendor	Product	Version
	zulip	zulip_server	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "zulip",
          "vendor": "zulip",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 4.10"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F19BE7BB-39B8-41FE-A025-1D985BEF3B67",
              "versionEndExcluding": "4.10.0",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users\u0027 email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com)."
    },
    {
      "lang": "es",
      "value": "Zulip es una herramienta de colaboraci\u00f3n en equipo de c\u00f3digo abierto con hilos basados en temas. Zulip Server versi\u00f3n 2.0.0 y superior, es vulnerable a un control de acceso insuficiente con invitaciones de uso m\u00faltiple. Un despliegue de Zulip Server que alberga m\u00faltiples organizaciones es vulnerable a un ataque en el que una invitaci\u00f3n creada en una organizaci\u00f3n (potencialmente como un rol con permisos elevados) puede ser usada para unirse a cualquier otra organizaci\u00f3n. Esto evita cualquier restricci\u00f3n de dominios requeridos en las direcciones de correo electr\u00f3nico de usuarios, puede ser usado para conseguir acceso a organizaciones a las que s\u00f3lo puede accederse por invitaci\u00f3n, y puede ser usado para conseguir acceso con altos privilegios. Este problema ha sido parcheado en versi\u00f3n 4.10. No se presentan medidas de mitigaci\u00f3n conocidas para este problema. ### Parches _\u00bfHa sido parcheado el problema? \u00bfA qu\u00e9 versiones deber\u00edan actualizarse los usuarios?_ ### Mitigaciones _\u00bfSe presenta alguna forma de que los usuarios mitiguen o remedien la vulnerabilidad sin necesidad de actualizarse?_## Referencias _\u00bfSe presenta alg\u00fan enlace que los usuarios puedan visitar para obtener m\u00e1s informaci\u00f3n?_## Para m\u00e1s informaci\u00f3n Si presenta alguna pregunta o comentario sobre este aviso, puede discutirlo en el [servidor de la comunidad de desarrolladores de Zulip](https://zulip.com/developer-community/), o enviar un correo electr\u00f3nico al [equipo de seguridad de Zulip](mailto:security@zulip.com).\n"
    }
  ],
  "id": "CVE-2022-21706",
  "lastModified": "2026-06-17T04:26:48.440",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-21706",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-23T15:57:16.778351Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2022-02-26T00:15:08.260",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GSD-2022-21706

Vulnerability from gsd - Updated: 2023-12-13 01:19

Details

Aliases

CVE-2022-21706

Aliases

CVE-2022-21706

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2022-21706",
    "description": "Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users\u0027 email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com).",
    "id": "GSD-2022-21706"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-21706"
      ],
      "details": "Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users\u0027 email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com).",
      "id": "GSD-2022-21706",
      "modified": "2023-12-13T01:19:14.889060Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-21706",
        "STATE": "PUBLIC",
        "TITLE": "Multi-use invitations can grant access to other organizations in Zulip"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "zulip",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003e= 2.0.0, \u003c 4.10"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "zulip"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users\u0027 email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com)."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
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                "value": "CWE-863: Incorrect Authorization"
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              {
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                "value": "CWE-284: Improper Access Control"
              }
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      },
      "references": {
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          {
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            "name": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/",
            "refsource": "MISC",
            "url": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/"
          },
          {
            "name": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706",
            "refsource": "MISC",
            "url": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-6xmj-2wcm-p2jc",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.10.0",
                "versionStartIncluding": "2.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
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      "cve": {
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-21706"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users\u0027 email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                  "value": "NVD-CWE-Other"
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        },
        "references": {
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              "name": "https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc",
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              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc"
            },
            {
              "name": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/"
            },
            {
              "name": "https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e"
            },
            {
              "name": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-07-24T13:47Z",
      "publishedDate": "2022-02-26T00:15Z"
    }
  }
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

Action not permitted

CVE-2022-21706 (GCVE-0-2022-21706)

CNVD-2022-15523

FKIE_CVE-2022-21706

GSD-2022-21706

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour