UBUNTU-CVE-2026-111103

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-111103
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111103.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-111103
Upstream
Published
2026-10-26T14:16:00Z
Modified
2026-10-28T20:17:42Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Improper Cleanup on Thrown Exception vulnerability in the HTTP/2 handler of mtrudel bandit allows an unauthenticated remote attacker to bypass per-connection resource limits via a single TCP write that carries several frames, one of which raises a stream error. When a frame raises StreamError partway through a chunk, Bandit.HTTP2.Handler.handle_data/3 sends RST_STREAM and continues with the connection state from before the chunk, dropping the rest of it. Streams opened by earlier frames in the chunk keep running their Plug calls, but the stream counts, last_stream_id, the rapid-reset timestamps, the HPACK decoder state and the buffer roll back, so max_concurrent_streams, max_requests and the rapid-reset limiter never see those streams. A client that sends one HEADERS frame more than max_concurrent_streams in each write has the extra refused and the others forgotten: with a limit of 10, five such writes run 50 Plug calls at once. This issue affects bandit: from 1.9.0 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-2026-111103.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-2026-111103.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-2026-111103.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-2026-111103.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-2026-111103.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-2026-111103.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-2026-111103.json"