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CVE-2019-20860

Status: ModifiedMedium (5.5)—

An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Mattermost — Mattermost Server

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2019-20860",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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  "affected": [
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  "published": "2020-06-19T15:15:10.743",
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    {
      "url": "https://mattermost.com/security-updates/",
      "tags": [
        "Vendor Advisory"
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      "value": "An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Mattermost Server versiones anteriores a 5.14.0, 5.13.3, 5.12.6 y 5.9.4. Permite a atacantes remotos causar una denegación de servicio (bloqueo de la aplicación) por medio de un documento SVG diseñado"
    }
  ],
  "lastModified": "2026-06-17T02:31:20.037",
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