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EUVD-2026-49254

🗓️ 27 Jul 2026 14:15:25Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 5 Views

Mattermost fails to cap frames and size for GIF uploads, enabling denial of service via crafted emoji.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-10819
27 Jul 202614:15
attackerkb
CVE
CVE-2026-10819
27 Jul 202614:15
cve
Cvelist
CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload
27 Jul 202614:15
cvelist
NVD
CVE-2026-10819
27 Jul 202615:16
nvd
Positive Technologies
PT-2026-64921
27 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload
27 Jul 202614:15
vulnrichment
[
  {
    "enisaIdVendor": [
      {
        "id": "4d4cb8b2-d030-3960-b3e0-6da9bc85ae03",
        "vendor": {
          "name": "Mattermost"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "0ef01ffd-eb92-3ba0-982f-3ac7bbe602b8",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "10.11.0 ≤10.11.20"
      },
      {
        "id": "52a6669c-05d0-33bd-834f-207eeb7a728d",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "11.6.0 ≤11.6.5"
      },
      {
        "id": "580cd2b6-c7ca-3b00-b350-dcae68b14cc3",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "11.8.0 ≤11.8.1"
      },
      {
        "id": "e6436b62-bdb4-33d0-9852-31683e17a47b",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "11.7.0 ≤11.7.4"
      }
    ]
  }
]

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27 Jul 2026 15:05Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
SSVC
5