cvelistv5 - cve-2025-14350

CVE-2025-14350 (GCVE-0-2025-14350)

Vulnerability from cvelistv5

Published

2026-02-16 12:05

Modified

2026-02-17 17:06

Severity ?

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

CWE

CWE-862 - Missing Authorization

Summary

Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563

References

URL

Tags

https://mattermost.com/security-updates

vendor-advisory

Impacted products

	Vendor	Product	Version
	Mattermost	Mattermost	Version: 11.1.0 ≤ 11.1.2 Version: 10.11.0 ≤ 10.11.9 Version: 11.2.0 ≤ 11.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-14350",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-17T16:42:13.718962Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-17T17:06:07.112Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Mattermost",
          "vendor": "Mattermost",
          "versions": [
            {
              "lessThanOrEqual": "11.1.2",
              "status": "affected",
              "version": "11.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.11.9",
              "status": "affected",
              "version": "10.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "11.2.1",
              "status": "affected",
              "version": "11.2.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "11.3.0"
            },
            {
              "status": "unaffected",
              "version": "11.1.3"
            },
            {
              "status": "unaffected",
              "version": "10.11.10"
            },
            {
              "status": "unaffected",
              "version": "11.2.2"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Harrison Healey"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mattermost versions 11.1.x \u003c= 11.1.2, 10.11.x \u003c= 10.11.9, 11.2.x \u003c= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563"
        }
      ],
      "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",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-16T12:05:33.312Z",
        "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
        "shortName": "Mattermost"
      },
      "references": [
        {
          "name": "MMSA-2025-00563",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mattermost.com/security-updates"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update Mattermost to versions 11.3.0, 11.1.3, 10.11.10, 11.2.2 or higher."
        }
      ],
      "source": {
        "advisory": "MMSA-2025-00563",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-66790"
        ],
        "discovery": "{\"self\"=\u003e\"https://mattermost.atlassian.net/rest/api/2/customFieldOption/10557\", \"value\"=\u003e\"Internal\", \"id\"=\u003e\"10557\"}"
      },
      "title": "Information disclosure via channel mentions in posts",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
    "assignerShortName": "Mattermost",
    "cveId": "CVE-2025-14350",
    "datePublished": "2026-02-16T12:05:33.312Z",
    "dateReserved": "2025-12-09T15:43:31.735Z",
    "dateUpdated": "2026-02-17T17:06:07.112Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-14350\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-17T16:42:13.718962Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-17T16:42:14.334Z\"}}], \"cna\": {\"title\": \"Information disclosure via channel mentions in posts\", \"source\": {\"defect\": [\"https://mattermost.atlassian.net/browse/MM-66790\"], \"advisory\": \"MMSA-2025-00563\", \"discovery\": \"{\\\"self\\\"=\u003e\\\"https://mattermost.atlassian.net/rest/api/2/customFieldOption/10557\\\", \\\"value\\\"=\u003e\\\"Internal\\\", \\\"id\\\"=\u003e\\\"10557\\\"}\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Harrison Healey\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Mattermost\", \"product\": \"Mattermost\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.1.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.1.2\"}, {\"status\": \"affected\", \"version\": \"10.11.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"10.11.9\"}, {\"status\": \"affected\", \"version\": \"11.2.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.2.1\"}, {\"status\": \"unaffected\", \"version\": \"11.3.0\"}, {\"status\": \"unaffected\", \"version\": \"11.1.3\"}, {\"status\": \"unaffected\", \"version\": \"10.11.10\"}, {\"status\": \"unaffected\", \"version\": \"11.2.2\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Update Mattermost to versions 11.3.0, 11.1.3, 10.11.10, 11.2.2 or higher.\"}], \"references\": [{\"url\": \"https://mattermost.com/security-updates\", \"name\": \"MMSA-2025-00563\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Mattermost versions 11.1.x \u003c= 11.1.2, 10.11.x \u003c= 10.11.9, 11.2.x \u003c= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862: Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee\", \"shortName\": \"Mattermost\", \"dateUpdated\": \"2026-02-16T12:05:33.312Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-14350\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-17T17:06:07.112Z\", \"dateReserved\": \"2025-12-09T15:43:31.735Z\", \"assignerOrgId\": \"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee\", \"datePublished\": \"2026-02-16T12:05:33.312Z\", \"assignerShortName\": \"Mattermost\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

CERTFR-2026-AVI-0052

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Mattermost Server. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données, un contournement de la politique de sécurité et un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Mattermost	Mattermost Server	Mattermost Server versions 10.11.x antérieures à 10.11.10
Mattermost	Mattermost Server	Mattermost Server versions 11.1.x antérieures à 11.1.3
Mattermost	Mattermost Server	Mattermost Server versions 11.2.x antérieures à 11.2.2

References

Title

Publication Time

Tags

Bulletin de sécurité Mattermost MMSA-2025-00548	2026-01-15	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2025-00549	2026-01-15	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2025-00563	2026-01-15	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2025-00561	2026-01-15	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2025-00550	2026-01-15	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2025-00560	2026-01-15	vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Mattermost Server versions 10.11.x ant\u00e9rieures \u00e0 10.11.10",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 11.1.x ant\u00e9rieures \u00e0 11.1.3",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 11.2.x ant\u00e9rieures \u00e0 11.2.2",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2025-14350",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-14350"
    },
    {
      "name": "CVE-2025-13821",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-13821"
    },
    {
      "name": "CVE-2026-20796",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-20796"
    },
    {
      "name": "CVE-2026-22892",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-22892"
    },
    {
      "name": "CVE-2025-14573",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-14573"
    }
  ],
  "initial_release_date": "2026-01-16T00:00:00",
  "last_revision_date": "2026-03-17T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0052",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-01-16T00:00:00.000000"
    },
    {
      "description": "Ajout du bulletin de s\u00e9curit\u00e9 MMSA-2025-00548.",
      "revision_date": "2026-01-16T00:00:00.000000"
    },
    {
      "description": "Ajout r\u00e9f\u00e9rences CVE",
      "revision_date": "2026-02-16T00:00:00.000000"
    },
    {
      "description": "Ajout des identifiants CVE-2025-13821, CVE-2025-14350 et CVE-2025-14573 et modification des risques.",
      "revision_date": "2026-03-17T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Mattermost Server. Elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es, un contournement de la politique de s\u00e9curit\u00e9 et un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Mattermost Server",
  "vendor_advisories": [
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00548",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00549",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00563",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00561",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00550",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-01-15",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00560",
      "url": "https://mattermost.com/security-updates/"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2025-14350 (GCVE-0-2025-14350)

Vulnerability from cvelistv5

CERTFR-2026-AVI-0052

Vulnerability from certfr_avis

Solutions

Tags

Sightings

Nomenclature