DEBIAN-CVE-2026-41479
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.10 and 1.7.1, Authlib's OAuth 2.0 authorization endpoint can be turned into an unauthenticated open redirect when a request uses an unsupported response_type and supplies an attacker-controlled redirect_uri. The vulnerable behavior happens before client lookup and before any redirect URI validation. As a result, an attacker does not need a valid client registration, an authenticated user, or any prior state. A single request to the authorization endpoint is enough to obtain a 302 Location response to an arbitrary attacker-controlled URL. This vulnerability is fixed in 1.6.10 and 1.7.1.
DEBIAN-CVE-2026-41479
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-2026-41479
python-authlib
Source reference: /affected/0/package/name
- Affected versions
- 1.6.0-1
Source reference:
/affected/0/versions1.6.0-1+deb13u1Source reference:
/affected/0/versions1.6.1-1Source reference:
/affected/0/versions1.6.3-1Source reference:
/affected/0/versions1.6.4-1Source reference:
/affected/0/versions1.6.5-1Source reference:
/affected/0/versions1.6.6-1Source reference:
/affected/0/versions1.6.7-1Source reference:
/affected/0/versions1.6.8-1Source reference:
/affected/0/versions1.6.9-1Source reference:
/affected/0/versions1.7.0-1Source reference:
/affected/0/versions1.7.2-1Source reference:
/affected/0/versions1.7.2-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
python-authlib
Source reference: /affected/1/package/name
- Affected versions
- 1.6.0-1
Source reference:
/affected/1/versions1.6.1-1Source reference:
/affected/1/versions1.6.3-1Source reference:
/affected/1/versions1.6.4-1Source reference:
/affected/1/versions1.6.5-1Source reference:
/affected/1/versions1.6.6-1Source reference:
/affected/1/versions1.6.7-1Source reference:
/affected/1/versions1.6.8-1Source reference:
/affected/1/versions1.6.9-1Source reference:
/affected/1/versions1.7.0-1Source reference:
/affected/1/versions - Fixed versions
- 1.7.2-1
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-authlib",
"purl": "pkg:deb/debian/python-authlib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.6.0-1",
"1.6.0-1+deb13u1",
"1.6.1-1",
"1.6.3-1",
"1.6.4-1",
"1.6.5-1",
"1.6.6-1",
"1.6.7-1",
"1.6.8-1",
"1.6.9-1",
"1.7.0-1",
"1.7.2-1",
"1.7.2-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41479.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.2-1"
}
]
}
],
"package": {
"name": "python-authlib",
"purl": "pkg:deb/debian/python-authlib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.6.0-1",
"1.6.1-1",
"1.6.3-1",
"1.6.4-1",
"1.6.5-1",
"1.6.6-1",
"1.6.7-1",
"1.6.8-1",
"1.6.9-1",
"1.7.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41479.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57605 · Revision 1
- Added to Heist Feed
- Publisher date