Vulnerability-Lookup

CVE-2025-6465 (GCVE-0-2025-6465)

Vulnerability from cvelistv5 – Published: 2025-08-21 17:01 – Updated: 2025-08-21 17:30

Title

Path traversal in image upload with preview overwrite

Summary

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.

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 2025-08-21 17:21 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

Mattermost mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version	CPE status
Mattermost	Mattermost	Affected: 10.8.0 , ≤ 10.8.3 (semver) Affected: 10.5.0 , ≤ 10.5.8 (semver) Affected: 10.10.0 (semver) Affected: 10.9.0 , ≤ 10.9.3 (semver) Unaffected: 10.11.0 Unaffected: 10.8.4 Unaffected: 10.5.9 Unaffected: 10.10.1 Unaffected: 10.9.4	guessed

Credits

daw10

Show details on NVD website

JSON

To clipboard

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CERTFR-2025-AVI-0614

Vulnerability from certfr_avis - Published: 2025-07-23 - Updated: 2025-08-21

Une vulnérabilité a été découverte dans Mattermost Server. Elle permet 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 10.10.x antérieures à 10.10.1
Mattermost	Mattermost Server	Mattermost Server versions 10.8.x antérieures à 10.8.4
Mattermost	Mattermost Server	Mattermost Server versions 10.5.x antérieures à 10.5.9
Mattermost	Mattermost Server	Mattermost Server versions 9.11.x antérieures à 9.11.18
Mattermost	Mattermost Server	Mattermost Server versions 10.9.x antérieures à 10.9.4

References

Title

Publication Time

FKIE_CVE-2025-6465

Vulnerability from fkie_nvd - Published: 2025-08-21 17:15 - Updated: 2026-06-17 10:01

Severity

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

Summary

References

	URL	Tags
	responsibledisclosure@mattermost.com	https://mattermost.com/security-updates	Vendor Advisory

Impacted products

Vendor	Product	Version
mattermost	mattermost_server	*
mattermost	mattermost_server	*
mattermost	mattermost_server	*
mattermost	mattermost_server	10.10.0

JSON

To clipboard

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              "matchCriteriaId": "B95DCAE5-07C2-46B1-B03E-ED3FB9B2C568",
              "versionEndExcluding": "10.5.9",
              "versionStartIncluding": "10.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BE00156D-6ACB-4F8C-BFFC-03A8127199A4",
              "versionEndExcluding": "10.8.4",
              "versionStartIncluding": "10.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BB49CDD5-C206-4BEC-8CB5-D757DCC43208",
              "versionEndExcluding": "10.9.4",
              "versionStartIncluding": "10.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:10.10.0:-:*:*:*:*:*:*",
              "matchCriteriaId": "881B8E63-A35D-4883-A388-E68BD5529883",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mattermost versions 10.8.x \u003c= 10.8.3, 10.5.x \u003c= 10.5.8, 10.10.x \u003c= 10.10.0, 10.9.x \u003c= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs."
    },
    {
      "lang": "es",
      "value": "Las versiones de Mattermost 10.8.x \u0026lt;= 10.8.3, 10.5.x \u0026lt;= 10.5.8, 10.10.x \u0026lt;= 10.10.0, 10.9.x \u0026lt;= 10.9.3 no pueden depurar los nombres de archivos, lo que permite a los usuarios con permiso de carga de archivos sobrescribir las miniaturas de los archivos adjuntos mediante el path traversal en las API de transmisi\u00f3n de archivos."
    }
  ],
  "id": "CVE-2025-6465",
  "lastModified": "2026-06-17T10:01:57.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "responsibledisclosure@mattermost.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-6465",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-08-21T17:21:02.910833Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-08-21T17:15:32.707",
  "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-22"
        }
      ],
      "source": "responsibledisclosure@mattermost.com",
      "type": "Secondary"
    }
  ]
}

GHSA-PJ6F-RC94-GW53

Vulnerability from github – Published: 2025-08-21 18:31 – Updated: 2025-08-29 21:00

Summary

Mattermost Fails to Sanitize File Names

Details

Severity

4.3 (Medium)


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

Show details on source website

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.8.3"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.8.0"
            },
            {
              "fixed": "10.8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.5.8"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.5.0"
            },
            {
              "fixed": "10.5.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.9.3"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.9.0"
            },
            {
              "fixed": "10.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.10.0"
            },
            {
              "fixed": "10.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "10.10.0"
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20250708173752-d6b35c41f0ae5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-6465"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-22T16:58:51Z",
    "nvd_published_at": "2025-08-21T17:15:32Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost versions 10.8.x \u003c= 10.8.3, 10.5.x \u003c= 10.5.8, 10.10.x \u003c= 10.10.0, 10.9.x \u003c= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.",
  "id": "GHSA-pj6f-rc94-gw53",
  "modified": "2025-08-29T21:00:27Z",
  "published": "2025-08-21T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6465"
    },
    {
      "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-2025-3906"
    }
  ],
  "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 Fails to Sanitize File Names"
}

WID-SEC-W-2025-1625

Vulnerability from csaf_certbund - Published: 2025-07-22 22:00 - Updated: 2025-08-21 22:00

Summary

Mattermost Server und Plugins: Mehrere Schwachstellen

Severity

Hoch

Scope

9 vulnerabilities in this advisory, including CVE-2025-6465.

CVE-2025-6465

Known affected: 10 products

Open the full advisory

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.

Detection rules are retrieved from Rulezet.

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.

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.

Action not permitted

CVE-2025-6465 (GCVE-0-2025-6465)

CERTFR-2025-AVI-0614

Solutions

FKIE_CVE-2025-6465

GHSA-PJ6F-RC94-GW53

WID-SEC-W-2025-1625

Tags

Sightings

Nomenclature

Related by attack behaviour