UBUNTU-CVE-2026-14587

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Source
https://ubuntu.com/security/CVE-2026-14587
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-14587
Upstream
Published
2026-08-06T00:00:00Z
Modified
2026-08-06T22:15:11.730756067Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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, the decoder resets the reader index and waits for more bytes instead of rejecting the protocol message and closing the channel. Because the same unread bytes remain at the front of the decoder buffer, appending a terminating byte later does not recover the connection. The decoder re-reads the same first 32 continuation bytes, returns without producing a handshake-finalization message, and leaves the channel open. This can be triggered before authentication by any client that can reach the Bolt connector.

References

Affected packages

Ubuntu:18.04:LTS / bolt

Package

Name
bolt
Purl
pkg:deb/ubuntu/bolt?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1-0ubuntu1
0.2-0ubuntu1
0.3-0ubuntu0.1
0.4-0ubuntu0.18.04.1
0.5-0ubuntu0.18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.5-0ubuntu0.18.04.1",
            "binary_name": "bolt"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json"

Ubuntu:20.04:LTS / bolt

Package

Name
bolt
Purl
pkg:deb/ubuntu/bolt?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.8-4
0.8-4ubuntu1
0.9.1-2~ubuntu20.04.1
0.9.1-2~ubuntu20.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.1-2~ubuntu20.04.2",
            "binary_name": "bolt"
        },
        {
            "binary_version": "0.9.1-2~ubuntu20.04.2",
            "binary_name": "bolt-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json"

Ubuntu:22.04:LTS / bolt

Package

Name
bolt
Purl
pkg:deb/ubuntu/bolt?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.1-2
0.9.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.2-1",
            "binary_name": "bolt"
        },
        {
            "binary_version": "0.9.2-1",
            "binary_name": "bolt-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json"

Ubuntu:24.04:LTS / bolt

Package

Name
bolt
Purl
pkg:deb/ubuntu/bolt?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.5-1
0.9.6-1
0.9.6-2
0.9.6-2build1
0.9.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.7-1",
            "binary_name": "bolt"
        },
        {
            "binary_version": "0.9.7-1",
            "binary_name": "bolt-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json"

Ubuntu:26.04:LTS / bolt

Package

Name
bolt
Purl
pkg:deb/ubuntu/bolt?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.8-1
0.9.10-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.10-1",
            "binary_name": "bolt"
        },
        {
            "binary_version": "0.9.10-1",
            "binary_name": "bolt-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14587.json"