Vulnerability-Lookup

GHSA-9FPW-C9X7-CV3J

Vulnerability from github – Published: 2024-08-01 15:32 – Updated: 2025-07-09 16:41

Summary

Mattermost allows remote actor to set arbitrary RemoteId values for synced users

Details

Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.

Severity

2.7 (Low)


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

5.1 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.5.0"
            },
            {
              "fixed": "9.5.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.9.0"
            },
            {
              "fixed": "9.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.9.0"
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20240604093018-5114c3b7cdb8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.2-0.20240604093018-5114c3b7cdb8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-41926"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284",
      "CWE-346"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-02T01:19:49Z",
    "nvd_published_at": "2024-08-01T15:15:13Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs,\u00a0which allows a malicious remote to\u00a0set arbitrary RemoteId values for synced users and therefore\u00a0claim that a user was synced from another remote.",
  "id": "GHSA-9fpw-c9x7-cv3j",
  "modified": "2025-07-09T16:41:20Z",
  "published": "2024-08-01T15:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41926"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/5114c3b7cdb84086959bf0ef8bc5afdaedf9fef6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2024-3022"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mattermost allows remote actor to\u00a0set arbitrary RemoteId values for synced users"
}

CVE-2024-41926 (GCVE-0-2024-41926)

Vulnerability from cvelistv5 – Published: 2024-08-01 14:05 – Updated: 2024-08-01 14:32

Title

Malicious remote can claim that a user was synced from another remote

Summary

Severity

2.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-01 14:31 UTC

CWE

CWE-284 - Improper Access Control

Assigner

Mattermost mitre root

References

1 reference

URL	Tags
https://mattermost.com/security-updates

Impacted products

1 product

Vendor	Product	Version
Mattermost	Mattermost	Affected: 9.9.0 Affected: 9.5.0 , ≤ 9.5.6 (semver) Unaffected: 9.10.0 Unaffected: 9.9.1 Unaffected: 9.5.7

Credits

Juho Forsén

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-41926",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-01T14:31:59.417867Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-01T14:32:10.107Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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    "cna": {
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          "vendor": "Mattermost",
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              "version": "9.9.0"
            },
            {
              "lessThanOrEqual": "9.5.6",
              "status": "affected",
              "version": "9.5.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "9.10.0"
            },
            {
              "status": "unaffected",
              "version": "9.9.1"
            },
            {
              "status": "unaffected",
              "version": "9.5.7"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Juho Fors\u00e9n"
        }
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
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            "attackVector": "NETWORK",
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            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
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            "userInteraction": "NONE",
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            }
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      ],
      "source": {
        "advisory": "MMSA-2024-00343",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-58252"
        ],
        "discovery": "INTERNAL"
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      "x_generator": {
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  "cveMetadata": {
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    "dateReserved": "2024-07-23T18:35:14.800Z",
    "dateUpdated": "2024-08-01T14:32:10.107Z",
    "state": "PUBLISHED"
  },
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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.

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.

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Action not permitted

GHSA-9FPW-C9X7-CV3J

CVE-2024-41926 (GCVE-0-2024-41926)

Tags

Sightings

Nomenclature

Related by attack behaviour