DEBIAN-CVE-2026-54275
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.
DEBIAN-CVE-2026-54275
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-54275
python-aiohttp
Source reference: /affected/0/package/name
- Affected versions
- 3.11.16-1
Source reference:
/affected/0/versions3.11.16-1+deb13u1Source reference:
/affected/0/versions3.12.15-1Source reference:
/affected/0/versions3.13.0-1Source reference:
/affected/0/versions3.13.1-1Source reference:
/affected/0/versions3.13.3-1Source reference:
/affected/0/versions3.13.3-2Source reference:
/affected/0/versions3.13.3-3Source reference:
/affected/0/versions3.13.5-1Source reference:
/affected/0/versions3.14.0-1Source reference:
/affected/0/versions3.14.1-1Source reference:
/affected/0/versions3.14.1-2Source reference:
/affected/0/versions3.14.1-3Source reference:
/affected/0/versions3.14.1-4Source reference:
/affected/0/versions3.14.1-5Source reference:
/affected/0/versions3.14.3-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
python-aiohttp
Source reference: /affected/1/package/name
- Affected versions
- 3.11.16-1
Source reference:
/affected/1/versions3.12.15-1Source reference:
/affected/1/versions3.13.0-1Source reference:
/affected/1/versions3.13.1-1Source reference:
/affected/1/versions3.13.3-1Source reference:
/affected/1/versions3.13.3-2Source reference:
/affected/1/versions3.13.3-3Source reference:
/affected/1/versions3.13.5-1Source reference:
/affected/1/versions3.14.0-1Source reference:
/affected/1/versions - Fixed versions
- 3.14.1-1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"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",
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54275.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"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-2026-54275.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]- Related CVEs
- CVE-2026-54275
Source reference:
/upstream
Publisher severity
high
Source reference: /severity/0/score
- Event
- #67662 · Revision 1
- Added to Heist Feed
- Publisher date