High
python-aiohttp — security advisory
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.
- Products
- python-aiohttp
- Affected versions
- 0.17.2-1, 0.17.4-1, 0.17.4-1build1, 0.20.2-1, 0.20.2-1ubuntu0.1~esm1, 2.2.3-1build1, 2.2.3-2, 2.3.6-1, 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, 3.10.11-1build1, 3.11.16-1, 3.11.16-1ubuntu0.1, 3.13.1-1, 3.13.3-3, 3.13.3-3ubuntu1, 3.13.3-3ubuntu1+esm1, 3.14.1-4, 3.14.1-5, 3.14.3-1, 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, 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, 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
- Fixed versions
- Not specified
- CVEs
- CVE-2026-34993
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:00 UTC · Revision 1
Source evidence
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.
osv:UBUNTU-CVE-2026-34993
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: Not specified
Complete source record
{
"id": "254d71741906dbc1e35f5acafc3fc6d8069cc2cde175fca6d8cc38681c7bdc31",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-34993",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-34993",
"summary": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.",
"evidence": "osv:UBUNTU-CVE-2026-34993",
"products": [
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.17.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.4-1build1",
"evidence": "/affected/0/versions"
},
{
"value": "0.20.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.20.2-1ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.3-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.3-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.3.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1ubuntu0.1~esm4",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1ubuntu0.1~esm5",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1ubuntu0.1~esm6",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.1-1ubuntu0.1~esm7",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.4-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu0.1~esm1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1+esm3",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1+esm4",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1+esm5",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.2-1ubuntu1+esm6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.4-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.7.4-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-3",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4build1",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4ubuntu0.2",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4ubuntu0.2+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4ubuntu0.2+esm2",
"evidence": "/affected/3/versions"
},
{
"value": "3.8.1-4ubuntu0.2+esm3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.8.4-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1ubuntu0.1",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1ubuntu0.1+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1ubuntu0.1+esm2",
"evidence": "/affected/4/versions"
},
{
"value": "3.9.1-1ubuntu0.1+esm3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.10.11-1build1",
"evidence": "/affected/5/versions"
},
{
"value": "3.11.16-1",
"evidence": "/affected/5/versions"
},
{
"value": "3.11.16-1ubuntu0.1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.13.3-3ubuntu1",
"evidence": "/affected/6/versions"
},
{
"value": "3.14.1-4",
"evidence": "/affected/6/versions"
},
{
"value": "3.14.1-5",
"evidence": "/affected/6/versions"
},
{
"value": "3.14.3-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.11.16-1",
"evidence": "/affected/7/versions"
},
{
"value": "3.13.1-1",
"evidence": "/affected/7/versions"
},
{
"value": "3.13.3-3",
"evidence": "/affected/7/versions"
},
{
"value": "3.13.3-3ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "3.13.3-3ubuntu1+esm1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-34993",
"aliases": [
"UBUNTU-CVE-2026-34993"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"0.17.2-1",
"0.17.4-1",
"0.17.4-1build1",
"0.20.2-1",
"0.20.2-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "0.20.2-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"2.2.3-1build1",
"2.2.3-2",
"2.3.6-1",
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.0.1-1ubuntu0.1~esm7"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.6.2-1ubuntu1+esm6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.8.1-4ubuntu0.2+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.9.1-1ubuntu0.1+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.10.11-1build1",
"3.11.16-1",
"3.11.16-1ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.11.16-1ubuntu0.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.13.3-3ubuntu1",
"3.14.1-4",
"3.14.1-5",
"3.14.3-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.14.3-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/ubuntu/python-aiohttp?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"3.11.16-1",
"3.13.1-1",
"3.13.3-3",
"3.13.3-3ubuntu1",
"3.13.3-3ubuntu1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34993.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-aiohttp",
"binary_version": "3.13.3-3ubuntu1+esm1"
}
]
}
}
],
"modified": "2026-10-17T13:00:02.070057558Z",
"provider": "osv",
"upstream": [
"CVE-2026-34993"
],
"references": [
"https://ubuntu.com/security/CVE-2026-34993",
"https://www.cve.org/CVERecord?id=CVE-2026-34993"
]
},
"related_cves": [
{
"value": "CVE-2026-34993",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/2/score"
},
"source_id": "core-osv",
"document_id": 360157,
"published_at": "2026-06-02T20:16:00+00:00"
}