HighFix available
python-aiohttp — security advisory
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.
- Products
- python-aiohttp
- Affected versions
- 3.11.16-1, 3.11.16-1+deb13u1, 3.12.15-1, 3.13.0-1, 3.13.1-1, 3.13.3-1, 3.13.3-2, 3.13.3-3, 3.13.5-1, 3.14.0-1, 3.14.1-1, 3.14.1-2, 3.14.1-3, 3.14.1-4, 3.14.1-5, 3.14.3-1
- Fixed versions
- 3.14.1-1
- CVEs
- CVE-2026-54278
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:17 UTC · Revision 2
Source evidence
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.
osv:DEBIAN-CVE-2026-54278
python-aiohttp
Fixed versions: Not specified
python-aiohttp
Fixed versions: 3.14.1-1
Complete source record
{
"id": "8a6e5a2815b1ed03f109891bc320725733c0e6097e04f3a60bdd01bcd9e7e82e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-54278",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-54278",
"summary": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.",
"evidence": "osv:DEBIAN-CVE-2026-54278",
"products": [
{
"name": {
"value": "python-aiohttp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.11.16-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.11.16-1+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.12.15-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.3-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.3-3",
"evidence": "/affected/0/versions"
},
{
"value": "3.13.5-1",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
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{
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{
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{
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"evidence": "/affected/0/versions"
},
{
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{
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
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{
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}
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}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-54278",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
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],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/debian/python-aiohttp?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.11.16-1",
"3.11.16-1+deb13u1",
"3.12.15-1",
"3.13.0-1",
"3.13.1-1",
"3.13.3-1",
"3.13.3-2",
"3.13.3-3",
"3.13.5-1",
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"3.14.1-1",
"3.14.1-2",
"3.14.1-3",
"3.14.1-4",
"3.14.1-5",
"3.14.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54278.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
"fixed": "3.14.1-1"
}
]
}
],
"package": {
"name": "python-aiohttp",
"purl": "pkg:deb/debian/python-aiohttp?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.11.16-1",
"3.12.15-1",
"3.13.0-1",
"3.13.1-1",
"3.13.3-1",
"3.13.3-2",
"3.13.3-3",
"3.13.5-1",
"3.14.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54278.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T11:47:33.176081758Z",
"provider": "osv",
"upstream": [
"CVE-2026-54278"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-54278"
]
},
"related_cves": [
{
"value": "CVE-2026-54278",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450787,
"published_at": "2026-06-22T18:16:46.393+00:00"
}