Vulnerability-Lookup

GHSA-455C-VQRF-MGHR

Vulnerability from github – Published: 2023-06-16 09:30 – Updated: 2025-07-25 14:50

Summary

Mattermost Server Missing Authorization vulnerability

Details

Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.

Severity

4.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server/v6"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.10.0"
            },
            {
              "fixed": "7.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.10.0"
      ]
    },
    {
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        "name": "github.com/mattermost/mattermost-server/v6"
      },
      "ranges": [
        {
          "events": [
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              "introduced": "7.9.0"
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              "fixed": "7.9.4"
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    },
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        "name": "github.com/mattermost/mattermost-server/v6"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "7.8.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
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        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server/v6"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0-20230511130429-1629a6ca7fed"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-2783"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-23T21:37:38Z",
    "nvd_published_at": "2023-06-16T09:15:09Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to\u00a0modify the contents of the post sent by the Apps.",
  "id": "GHSA-455c-vqrf-mghr",
  "modified": "2025-07-25T14:50:30Z",
  "published": "2023-06-16T09:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2783"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost-server"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost Server Missing Authorization vulnerability"
}

CVE-2023-2783 (GCVE-0-2023-2783)

Vulnerability from cvelistv5 – Published: 2023-06-16 08:39 – Updated: 2024-12-06 23:03

Title

App Framework does not checks for the secret provided in the incoming webhook request

Summary

Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/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 2024-12-06 22:51 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Mattermost CNA under the mitre root

CNA scorecard B 80/100 over 107 records in the last 180 days details

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Mattermost	Mattermost App Framework	Affected: 0 , ≤ 7.8.4 (semver) Affected: 0 , ≤ 7.9.3 (semver) Affected: 7.10.0 Unaffected: 7.10.1 Unaffected: 7.8.5 Unaffected: 7.9.4

Credits

Rohitesh Gupta

Show details on NVD website

JSON

To clipboard

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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.

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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.
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