FKIE_CVE-2025-6226

Vulnerability from fkie_nvd - Published: 2025-07-18 09:15 - Updated: 2025-10-02 19:49
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
Mattermost versions 10.5.x <= 10.5.6, 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 9.11.x <= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they don't have access to via guessing the PendingPostID of recently created posts.
References
responsibledisclosure@mattermost.comhttps://mattermost.com/security-updatesVendor Advisory
Impacted products
Vendor Product Version
mattermost mattermost_server *
mattermost mattermost_server *
mattermost mattermost_server *
mattermost mattermost_server *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3F117291-CF45-4790-8BEB-E51DB0BAEF82",
              "versionEndExcluding": "9.11.17",
              "versionStartIncluding": "9.11.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C91210B2-4844-4928-9AE6-086E1C55AACB",
              "versionEndExcluding": "10.5.7",
              "versionStartIncluding": "10.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "16C5891E-6981-4903-A57E-A7AF4FDE2D1B",
              "versionEndExcluding": "10.7.4",
              "versionStartIncluding": "10.7.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7B0956AE-D67B-4FC3-98A8-67DD6904A90F",
              "versionEndExcluding": "10.8.2",
              "versionStartIncluding": "10.8.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mattermost versions 10.5.x \u003c= 10.5.6, 10.8.x \u003c= 10.8.1, 10.7.x \u003c= 10.7.3, 9.11.x \u003c= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they don\u0027t have access to via guessing the PendingPostID of recently created posts."
    },
    {
      "lang": "es",
      "value": "Las versiones de Mattermost 10.5.x \u0026lt;= 10.5.6, 10.8.x \u0026lt;= 10.8.1, 10.7.x \u0026lt;= 10.7.3, 9.11.x \u0026lt;= 9.11.16 no pueden verificar la autorizaci\u00f3n al recuperar publicaciones en cach\u00e9 mediante PendingPostID, lo que permite que un usuario autenticado lea publicaciones en canales privados a los que no tiene acceso al adivinar el PendingPostID de publicaciones creadas recientemente."
    }
  ],
  "id": "CVE-2025-6226",
  "lastModified": "2025-10-02T19:49:18.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "responsibledisclosure@mattermost.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-07-18T09:15:26.993",
  "references": [
    {
      "source": "responsibledisclosure@mattermost.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "sourceIdentifier": "responsibledisclosure@mattermost.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "responsibledisclosure@mattermost.com",
      "type": "Secondary"
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.