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CVE-2026-4915

🗓️ 25 May 2026 07:10:23Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 14 Views

CVE-2026-4915: Authenticated user can cause server panic via webhook responses with a null attachment.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4915
25 May 202607:10
attackerkb
CNNVD
Mattermost 安全漏洞
25 May 202600:00
cnnvd
Cvelist
CVE-2026-4915 Server panic via outgoing webhook responses
25 May 202607:10
cvelist
EUVD
EUVD-2026-31646
25 May 202607:10
euvd
NVD
CVE-2026-4915
25 May 202608:16
nvd
Positive Technologies
PT-2026-43013
25 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-4915
26 May 202620:14
redhatcve
Snyk
Improper Check for Unusual or Exceptional Conditions
25 May 202610:59
snyk
Snyk
Improper Check for Unusual or Exceptional Conditions
25 May 202610:59
snyk
Vulnrichment
CVE-2026-4915 Server panic via outgoing webhook responses
25 May 202607:10
vulnrichment
Rows per page
NVD
Node
mattermostmattermost_serverRange10.11.010.11.15
OR
mattermostmattermost_serverRange11.4.011.4.5
OR
mattermostmattermost_serverRange11.5.011.5.4
OR
mattermostmattermost_serverRange11.6.011.6.1
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.6.0",
        "status": "affected",
        "version": "11.6.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.5.3",
        "status": "affected",
        "version": "11.5.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.4.4",
        "status": "affected",
        "version": "11.4.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.14",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.7.0",
        "status": "unaffected"
      },
      {
        "version": "11.6.1",
        "status": "unaffected"
      },
      {
        "version": "11.5.4",
        "status": "unaffected"
      },
      {
        "version": "11.4.5",
        "status": "unaffected"
      },
      {
        "version": "10.11.15",
        "status": "unaffected"
      }
    ]
  }
]

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01 Jun 2026 17:57Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
EPSS0.00047
SSVC
14