DEBIAN-CVE-2026-44432
urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when HTTPResponse.drain_conn() was called after the response had been read and decompressed partially (compression algorithm did not matter here). These issues could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This could result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data) on the client side. This vulnerability is fixed in 2.7.0.
DEBIAN-CVE-2026-44432
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-2026-44432
python-urllib3
Source reference: /affected/0/package/name
- Affected versions
- 2.3.0-3
Source reference:
/affected/0/versions2.5.0-1Source reference:
/affected/0/versions2.5.0-1.1Source reference:
/affected/0/versions2.5.0-2Source reference:
/affected/0/versions2.6.3-1Source reference:
/affected/0/versions2.6.3-2Source reference:
/affected/0/versions - Fixed versions
- 2.7.0-1
Source reference:
/affected/0/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"
},
{
"fixed": "2.7.0-1"
}
]
}
],
"package": {
"name": "python-urllib3",
"purl": "pkg:deb/debian/python-urllib3?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.3.0-3",
"2.5.0-1",
"2.5.0-1.1",
"2.5.0-2",
"2.6.3-1",
"2.6.3-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44432.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57051 · Revision 1
- Added to Heist Feed
- Publisher date