cvelistv5 - cve-2026-10600

CVE-2026-10600 (GCVE-0-2026-10600)

Vulnerability from cvelistv5

Published

2026-07-27 14:13

Modified

2026-07-27 15:04

Severity ?

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

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Summary

Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694

References

URL

Tags

https://mattermost.com/security-updates

vendor-advisory

Impacted products

	Vendor	Product	Version
	Mattermost	Mattermost	Version: 11.8.0 ≤ 11.8.0 Version: 11.7.0 ≤ 11.7.3 Version: 11.6.0 ≤ 11.6.5 Version: 10.11.0 ≤ 10.11.20

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-10600",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-27T15:04:43.406801Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-27T15:04:58.593Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Mattermost",
          "vendor": "Mattermost",
          "versions": [
            {
              "lessThanOrEqual": "11.8.0",
              "status": "affected",
              "version": "11.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "11.7.3",
              "status": "affected",
              "version": "11.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "11.6.5",
              "status": "affected",
              "version": "11.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.11.20",
              "status": "affected",
              "version": "10.11.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "11.9.0"
            },
            {
              "status": "unaffected",
              "version": "11.8.1"
            },
            {
              "status": "unaffected",
              "version": "11.7.4"
            },
            {
              "status": "unaffected",
              "version": "11.6.6"
            },
            {
              "status": "unaffected",
              "version": "10.11.21"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "abderrahimelkahlaoui"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T14:13:29.962Z",
        "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
        "shortName": "Mattermost"
      },
      "references": [
        {
          "name": "MMSA-2026-00694",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mattermost.com/security-updates"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update Mattermost to versions 11.9.0, 11.8.1, 11.7.4, 11.6.6, 10.11.21 or higher."
        }
      ],
      "source": {
        "advisory": "MMSA-2026-00694",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-69097"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Denial of service via unbounded document content extraction in Mattermost Server",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
    "assignerShortName": "Mattermost",
    "cveId": "CVE-2026-10600",
    "datePublished": "2026-07-27T14:13:29.962Z",
    "dateReserved": "2026-06-02T09:04:58.161Z",
    "dateUpdated": "2026-07-27T15:04:58.593Z",
    "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-2026-10600\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-27T15:04:43.406801Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-27T15:04:53.414Z\"}}], \"cna\": {\"title\": \"Denial of service via unbounded document content extraction in Mattermost Server\", \"source\": {\"defect\": [\"https://mattermost.atlassian.net/browse/MM-69097\"], \"advisory\": \"MMSA-2026-00694\", \"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"abderrahimelkahlaoui\"}], \"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:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Mattermost\", \"product\": \"Mattermost\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.8.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.8.0\"}, {\"status\": \"affected\", \"version\": \"11.7.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.7.3\"}, {\"status\": \"affected\", \"version\": \"11.6.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.6.5\"}, {\"status\": \"affected\", \"version\": \"10.11.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"10.11.20\"}, {\"status\": \"unaffected\", \"version\": \"11.9.0\"}, {\"status\": \"unaffected\", \"version\": \"11.8.1\"}, {\"status\": \"unaffected\", \"version\": \"11.7.4\"}, {\"status\": \"unaffected\", \"version\": \"11.6.6\"}, {\"status\": \"unaffected\", \"version\": \"10.11.21\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Update Mattermost to versions 11.9.0, 11.8.1, 11.7.4, 11.6.6, 10.11.21 or higher.\"}], \"references\": [{\"url\": \"https://mattermost.com/security-updates\", \"name\": \"MMSA-2026-00694\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770: Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee\", \"shortName\": \"Mattermost\", \"dateUpdated\": \"2026-07-27T14:13:29.962Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-10600\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-27T15:04:58.593Z\", \"dateReserved\": \"2026-06-02T09:04:58.161Z\", \"assignerOrgId\": \"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee\", \"datePublished\": \"2026-07-27T14:13:29.962Z\", \"assignerShortName\": \"Mattermost\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

CERTFR-2026-AVI-0813

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Mattermost Server. Elles permettent à un attaquant de provoquer un déni de service à distance, 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 11.7.x antérieures à 11.7.5
Mattermost	Mattermost Server	Mattermost Server versions 11.8.x antérieures à 11.8.2
Mattermost	Mattermost Server	Mattermost Server versions 11.6.x antérieures à 11.6.6
Mattermost	Mattermost Server	Mattermost Server versions 10.11.x antérieures à 10.11.21

References

Title

Publication Time

Tags

Bulletin de sécurité Mattermost MMSA-2026-00694	2026-06-26	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2026-00681	2026-06-26	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2026-00695	2026-06-26	vendor-advisory
Bulletin de sécurité Mattermost MMSA-2026-00666	2026-06-26	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 11.7.x ant\u00e9rieures \u00e0 11.7.5",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 11.8.x ant\u00e9rieures \u00e0 11.8.2",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 11.6.x ant\u00e9rieures \u00e0 11.6.6",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 10.11.x ant\u00e9rieures \u00e0 10.11.21",
      "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-2026-10600",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-10600"
    },
    {
      "name": "CVE-2026-9597",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-9597"
    },
    {
      "name": "CVE-2026-7521",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-7521"
    },
    {
      "name": "CVE-2026-10819",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-10819"
    }
  ],
  "initial_release_date": "2026-06-29T00:00:00",
  "last_revision_date": "2026-07-15T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0813",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-06-29T00:00:00.000000"
    },
    {
      "description": "Ajout de la vuln\u00e9rabilit\u00e9 CVE-2026-9597",
      "revision_date": "2026-07-15T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Mattermost Server. Elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, 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": "2026-06-26",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00694",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-06-26",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00681",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-06-26",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00695",
      "url": "https://mattermost.com/security-updates/"
    },
    {
      "published_at": "2026-06-26",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00666",
      "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-2026-10600 (GCVE-0-2026-10600)

Vulnerability from cvelistv5

CERTFR-2026-AVI-0813

Vulnerability from certfr_avis

Solutions

Tags

Sightings

Nomenclature