CVE-2024-21630 (GCVE-0-2024-21630)

Vulnerability from cvelistv5 – Published: 2024-01-25 19:30 – Updated: 2025-05-29 15:19
VLAI
Title
Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to
Summary
Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi-use invitations, not single-use invitation links as in the prior CVE. Specifically, it applies when the installation has configured non-admins to be able to invite users and create multi-use invitations, and has also configured only admins to be able to invite users to streams. As in CVE-2023-32677, this does not let users invite new users to arbitrary streams, only to streams that the inviter can already see. Version 8.1 fixes this issue. As a workaround, administrators can limit sending of invitations down to users who also have the permission to add users to streams.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 15:52 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
zulip zulip Affected: = 8.0
guessed Create a notification for this product.
Show details on NVD website
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        "vulnStatus": "Modified",
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          {
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              {
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                "value": "CWE-862"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
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      "cve": "CVE-2024-21630",
      "id": "CVE-2024-21630",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-21630.json",
      "version": "3"
    },
    "vulnrichment": {
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              },
              {
                "name": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc",
                "tags": [
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                "url": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc"
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                "url": "https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf"
              },
              {
                "name": "https://zulip.com/help/configure-who-can-invite-to-streams",
                "tags": [
                  "x_refsource_MISC",
                  "x_transferred"
                ],
                "url": "https://zulip.com/help/configure-who-can-invite-to-streams"
              },
              {
                "name": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations",
                "tags": [
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                  "x_transferred"
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                "url": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"
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            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-21630",
                    "options": [
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                      },
                      {
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                      },
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                    "timestamp": "2025-05-08T15:52:52.338039Z",
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
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            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
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              "vendor": "zulip",
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            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
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          "problemTypes": [
            {
              "descriptions": [
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                  "cweId": "CWE-862",
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          "providerMetadata": {
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            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
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              "tags": [
                "x_refsource_MISC"
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              "url": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc"
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            },
            {
              "name": "https://zulip.com/help/configure-who-can-invite-to-streams",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://zulip.com/help/configure-who-can-invite-to-streams"
            },
            {
              "name": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations",
              "tags": [
                "x_refsource_MISC"
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              "url": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"
            }
          ],
          "source": {
            "advisory": "GHSA-87p9-wprh-7rm6",
            "discovery": "UNKNOWN"
          },
          "title": "Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to"
        }
      },
      "cveMetadata": {
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        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2024-21630",
        "datePublished": "2024-01-25T19:30:09.106Z",
        "dateReserved": "2023-12-29T03:00:44.954Z",
        "dateUpdated": "2025-05-29T15:19:04.180Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.



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.