UBUNTU-CVE-2026-34517

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Source
https://ubuntu.com/security/CVE-2026-34517
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-34517
Upstream
Published
2026-04-01T21:16:00Z
Modified
2026-04-27T20:10:59.723832Z
Severity
  • 2.7 (Low) 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:U CVSS Calculator
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, for some multipart form fields, aiohttp read the entire field into memory before checking clientmaxsize. This issue has been patched in version 3.13.4.

References

Affected packages

Ubuntu:16.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@0.20.2-1?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.17.2-1
0.17.4-1
0.17.4-1build1
0.20.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.20.2-1",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:25.10
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.11.16-1ubuntu0.1?arch=source&distro=questing

Affected ranges

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

Affected versions

3.*
3.10.11-1build1
3.11.16-1
3.11.16-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.11.16-1ubuntu0.1",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:26.04
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.13.3-3ubuntu1?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.11.16-1
3.13.1-1
3.13.3-3
3.13.3-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.13.3-3ubuntu1",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:Pro:18.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.0.1-1ubuntu0.1~esm6?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

2.*
2.2.3-1build1
2.2.3-2
2.3.6-1
3.*
3.0.1-1
3.0.1-1ubuntu0.1~esm1
3.0.1-1ubuntu0.1~esm4
3.0.1-1ubuntu0.1~esm5
3.0.1-1ubuntu0.1~esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.1-1ubuntu0.1~esm6",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:Pro:20.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.6.2-1ubuntu1+esm5?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

3.*
3.5.4-1
3.5.4-1build1
3.6.1-1
3.6.2-1
3.6.2-1build1
3.6.2-1ubuntu0.1~esm1
3.6.2-1ubuntu1
3.6.2-1ubuntu1+esm1
3.6.2-1ubuntu1+esm3
3.6.2-1ubuntu1+esm4
3.6.2-1ubuntu1+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.2-1ubuntu1+esm5",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:Pro:22.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.8.1-4ubuntu0.2+esm2?arch=source&distro=esm-apps/jammy

Affected ranges

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

Affected versions

3.*
3.7.4-1
3.7.4-1build2
3.8.1-3
3.8.1-4
3.8.1-4build1
3.8.1-4ubuntu0.2
3.8.1-4ubuntu0.2+esm1
3.8.1-4ubuntu0.2+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.8.1-4ubuntu0.2+esm2",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"
Ubuntu:Pro:24.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp@3.9.1-1ubuntu0.1+esm2?arch=source&distro=esm-apps/noble

Affected ranges

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

Affected versions

3.*
3.8.4-1
3.9.1-1
3.9.1-1build1
3.9.1-1ubuntu0.1
3.9.1-1ubuntu0.1+esm1
3.9.1-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.9.1-1ubuntu0.1+esm2",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34517.json"