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CVE-2026-14587 Unathenticated connection can hold Bolt channel open

🗓️ 05 Aug 2026 16:10:47Reported by Neo4jType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

Neo4j's Bolt modern handshake decoder treats an overlong capability bit mask the same way it treats a truncated bit mask. When an unauthenticated client sends a selected protocol version followed by 32 continuation bytes in the capability mask, th...

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Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-14587
5 Aug 202616:10
attackerkb
cve
CVE
CVE-2026-14587
5 Aug 202616:10
cve
euvd
EUVD
EUVD-2026-53446
5 Aug 202616:10
euvd
nvd
NVD
CVE-2026-14587
5 Aug 202617:16
nvd
vulnrichment
Vulnrichment
CVE-2026-14587 Unathenticated connection can hold Bolt channel open
5 Aug 202616:10
vulnrichment
[
  {
    "vendor": "neo4j",
    "product": "Enterprise Edition",
    "versions": [
      {
        "status": "affected",
        "version": "2025.01",
        "lessThan": "2026.07",
        "versionType": "date"
      },
      {
        "status": "affected",
        "version": "5.0",
        "lessThan": "5.26.29",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "neo4j",
    "product": "Community Edition",
    "collectionURL": "https://mvnrepository.com/artifact/org.neo4j/",
    "packageName": "neo4j",
    "repo": "https://github.com/neo4j/neo4j",
    "versions": [
      {
        "status": "affected",
        "version": "2025.01",
        "lessThan": "2026.07",
        "versionType": "date"
      },
      {
        "status": "affected",
        "version": "5.0",
        "lessThan": "5.26.29",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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05 Aug 2026 16:10Current
CVSS 46.9
6