UBUNTU-CVE-2026-114213

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Source
https://ubuntu.com/security/CVE-2026-114213
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-114213
Upstream
Published
2026-10-26T14:16:00Z
Modified
2026-10-28T20:17:45Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Allocation of Resources Without Limits or Throttling vulnerability in the WebSocket fragment reassembly of mtrudel bandit allows an unauthenticated remote attacker to exhaust server memory via a fragmented message made of many 1-byte continuation frames. Bandit.WebSocket.Connection checks max_fragmented_message_size against the payload bytes received, but keeps every non-final continuation frame as a new list cell around its own binary, and nothing limits the number of fragments. A 1-byte fragment costs 7 bytes on the wire but about 150 to 170 bytes of server memory, so one connection can hold about 150 times the configured limit, roughly 1.2 to 1.4 GB at the default 8 MB. Ping frames between fragments keep the connection alive past the idle timeout. This issue affects bandit: from 1.11.0 before 1.14.0.

References

Affected packages

Ubuntu:16.04:LTS
bandit

Package

Name
bandit
Purl
pkg:deb/ubuntu/bandit?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.13.2-1
0.13.2-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "0.13.2-3"
        },
        {
            "binary_name":  "python-bandit",
            "binary_version":  "0.13.2-3"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "0.13.2-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:18.04:LTS
bandit

Package

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

Affected ranges

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

Affected versions

1.*
1.4.0-0ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.4.0-0ubuntu2"
        },
        {
            "binary_name":  "python-bandit",
            "binary_version":  "1.4.0-0ubuntu2"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.4.0-0ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:20.04:LTS
bandit

Package

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

Affected ranges

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

Affected versions

1.*
1.5.1-3
1.6.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.6.2-1"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.6.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:22.04:LTS
bandit

Package

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

Affected ranges

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

Affected versions

1.*
1.6.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.6.2-1"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.6.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:24.04:LTS
bandit

Package

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

Affected ranges

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

Affected versions

1.*
1.6.2-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.6.2-3"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.6.2-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:26.04:LTS
bandit

Package

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

Affected ranges

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

Affected versions

1.*
1.7.10-2
1.7.10-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.7.10-3"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.7.10-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"
Ubuntu:26.10
bandit

Package

Name
bandit
Purl
pkg:deb/ubuntu/bandit?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.7.10-3
1.9.4-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bandit",
            "binary_version":  "1.9.4-1"
        },
        {
            "binary_name":  "python3-bandit",
            "binary_version":  "1.9.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114213.json"