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CVE-2019-20842

Status: ModifiedHigh (7.2)—

An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. There is SQL injection by admins via SearchAllChannels.

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-2019-20842",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-19T14:15:10.370",
  "references": [
    {
      "url": "https://mattermost.com/security-updates/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://mattermost.com/security-updates/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. There is SQL injection by admins via SearchAllChannels."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Mattermost Server versiones anteriores a 5.18.0, 5.17.2, 5.16.4, 5.15.4 y 5.9.7. Se presenta una inyección SQL por parte de los administradores mediante SearchAllChannels"
    }
  ],
  "lastModified": "2026-06-17T02:31:18.073",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4A5BE0A1-194D-4E16-8547-2290F3BF777D",
              "versionEndExcluding": "5.9.7"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87675506-EA42-48F1-B12B-C137D58A31BC",
              "versionEndExcluding": "5.15.4",
              "versionStartIncluding": "5.15.0"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88A5E809-55F9-4B8C-8CC9-D2263632626E",
              "versionEndExcluding": "5.16.4",
              "versionStartIncluding": "5.16.0"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1861A510-327D-452B-A4FA-12204ECA2358",
              "versionEndExcluding": "5.17.2",
              "versionStartIncluding": "5.17.0"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:5.18.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5966FFD8-6763-48E0-85A3-6624241F6FAB"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "51C15C53-6CCF-4A49-AAF2-88AE72E2216F"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "F46E3522-C7EB-4139-84F5-AFCED85D3C19"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:5.18.0:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7A353365-71E8-4382-9212-BD4495F5CF7E"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}