Vulnerability-Lookup

CVE-2022-23656 (GCVE-0-2022-23656)

Vulnerability from cvelistv5 – Published: 2022-03-02 20:25 – Updated: 2025-04-23 18:59

Title

Cross-site scripting vulnerability in Zulip Server

Summary

Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.

Severity

4.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 14:09 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7994 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/zulip/zulip/security/advisorie…	x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/e090027adcb…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
zulip	zulip	Affected: >= 2021-06-03, < 2022-03-01	guessed

Show details on NVD website

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}

CNVD-2022-17016

Vulnerability from cnvd - Published: 2022-03-06

Title

Zulip跨站脚本漏洞（CNVD-2022-17016）

Description

Zulip是Zulip团队的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 Zulip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执行客户端代码。

Severity

中

Patch Name

Zulip跨站脚本漏洞（CNVD-2022-17016）的补丁

Patch Description

Zulip是Zulip团队的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 Zulip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执行客户端代码。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

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-fc77-h3jc-6mfv

Reference

https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321 https://cxsecurity.com/cveshow/CVE-2022-23656/

Impacted products

Name
Zulip Zulip Server

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-23656"
    }
  },
  "description": "Zulip\u662fZulip\u56e2\u961f\u7684\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u5f00\u6e90\u7fa4\u804a\u5e94\u7528\u7a0b\u5e8f\u3002\u7528\u4e8e\u5c06\u5b9e\u65f6\u804a\u5929\u7684\u5373\u65f6\u6027\u4e0e\u7ebf\u7a0b\u5bf9\u8bdd\u7684\u751f\u4ea7\u529b\u4f18\u52bf\u76f8\u7ed3\u5408\u3002\n\nZulip\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\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u5ba2\u6237\u7aef\u4ee3\u7801\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-17016",
  "openTime": "2022-03-06",
  "patchDescription": "Zulip\u662fZulip\u56e2\u961f\u7684\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u5f00\u6e90\u7fa4\u804a\u5e94\u7528\u7a0b\u5e8f\u3002\u7528\u4e8e\u5c06\u5b9e\u65f6\u804a\u5929\u7684\u5373\u65f6\u6027\u4e0e\u7ebf\u7a0b\u5bf9\u8bdd\u7684\u751f\u4ea7\u529b\u4f18\u52bf\u76f8\u7ed3\u5408\u3002\r\n\r\nZulip\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\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u5ba2\u6237\u7aef\u4ee3\u7801\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\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-17016\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Zulip Zulip Server"
  },
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  "serverity": "\u4e2d",
  "submitTime": "2022-03-04",
  "title": "Zulip\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-17016\uff09"
}

FKIE_CVE-2022-23656

Vulnerability from fkie_nvd - Published: 2022-03-02 21:15 - Updated: 2026-06-17 04:30

Severity

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

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv	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= 2021-06-03, \u003c 2022-03-01"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8D1C326D-A865-4460-AB1B-34B96D16B599",
              "versionEndExcluding": "2022-03-01",
              "versionStartIncluding": "2021-06-03",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix."
    },
    {
      "lang": "es",
      "value": "Zulip es una aplicaci\u00f3n de chat en equipo de c\u00f3digo abierto. La rama de desarrollo \"main\" de Zulip Server de junio de 2021 y posteriores, es susceptible a una vulnerabilidad de tipo cross-site scripting en la p\u00e1gina de temas recientes. Un atacante podr\u00eda dise\u00f1ar maliciosamente un nombre completo para su cuenta y enviar mensajes a un tema con varios participantes; una v\u00edctima que abra un tooltip de desbordamiento que incluya este nombre completo en la p\u00e1gina de temas recientes podr\u00eda desencadenar una ejecuci\u00f3n de c\u00f3digo JavaScript controlado por el atacante. Los usuarios que ejecuten un servidor Zulip desde la rama principal deben actualizar desde la principal (01-03-2022 o posterior) de nuevo para implementar esta correcci\u00f3n"
    }
  ],
  "id": "CVE-2022-23656",
  "lastModified": "2026-06-17T04:30:34.697",
  "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": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 2.5,
        "source": "security-advisories@github.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"
        },
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        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-23T14:09:33.158612Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2022-03-02T21:15:08.160",
  "references": [
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      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv"
    },
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      ],
      "url": "https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
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        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GSD-2022-23656

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

Details

Aliases

CVE-2022-23656

Aliases

CVE-2022-23656

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2022-23656",
    "description": "Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.",
    "id": "GSD-2022-23656"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-23656"
      ],
      "details": "Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.",
      "id": "GSD-2022-23656",
      "modified": "2023-12-13T01:19:35.802393Z",
      "schema_version": "1.4.0"
    }
  },
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      },
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}

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-2022-23656 (GCVE-0-2022-23656)

CNVD-2022-17016

FKIE_CVE-2022-23656

GSD-2022-23656

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour