UBUNTU-CVE-2026-54277

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Source
https://ubuntu.com/security/CVE-2026-54277
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-54277
Upstream
Published
2026-06-22T18:16:00Z
Modified
2026-07-23T01:15:25.117627540Z
Severity
  • 6.6 (Medium) 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/E:U CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the maxlinesize check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.

References

Affected packages

Ubuntu:25.10
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?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-2026-54277.json"
Ubuntu:Pro:16.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps-legacy%2Fxenial

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
0.20.2-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.20.2-1ubuntu0.1~esm1",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"
Ubuntu:Pro:18.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fbionic

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
3.0.1-1ubuntu0.1~esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.1-1ubuntu0.1~esm7",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"
Ubuntu:Pro:20.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Ffocal

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
3.6.2-1ubuntu1+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.2-1ubuntu1+esm6",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"
Ubuntu:Pro:22.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fjammy

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
3.8.1-4ubuntu0.2+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.8.1-4ubuntu0.2+esm3",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"
Ubuntu:Pro:24.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fnoble

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
3.9.1-1ubuntu0.1+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.9.1-1ubuntu0.1+esm3",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"
Ubuntu:Pro:26.04:LTS
python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fresolute

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
3.13.3-3ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.13.3-3ubuntu1+esm1",
            "binary_name": "python3-aiohttp"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54277.json"