DEBIAN-CVE-2026-57178
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the `vk-app` backend accepted VK application callback data without verifying the callback signature when the `auth_key` parameter was omitted. Applications using this backend could treat unsigned attacker-controlled data as a verified VK identity. An attacker could choose callback fields such as `viewer_id`, `access_token`, `api_id`, and `api_result`, potentially allowing authentication as an arbitrary VK user ID. The issue affects only applications using the `vk-app` backend. The issue has been fixed in version 5.0.0 by requiring `auth_key` to be present and valid before callback data is trusted.
DEBIAN-CVE-2026-57178
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-2026-57178
social-auth-core
Source reference: /affected/0/package/name
- Affected versions
- 4.3.0-1
Source reference:
/affected/0/versions4.4.2-1Source reference:
/affected/0/versions4.4.2-2Source reference:
/affected/0/versions4.5.3-1Source reference:
/affected/0/versions4.5.4-1Source reference:
/affected/0/versions4.5.6-1Source reference:
/affected/0/versions4.6.1-1Source reference:
/affected/0/versions4.8.1-1Source reference:
/affected/0/versions4.8.3-1Source reference:
/affected/0/versions4.8.5-1Source reference:
/affected/0/versions4.8.7-1Source reference:
/affected/0/versions4.9.1-1Source reference:
/affected/0/versions5.0.2-1Source reference:
/affected/0/versions5.1.0-1Source reference:
/affected/0/versions5.1.0-2Source reference:
/affected/0/versions5.1.1-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
social-auth-core
Source reference: /affected/1/package/name
- Affected versions
- 4.6.1-1
Source reference:
/affected/1/versions4.8.1-1Source reference:
/affected/1/versions4.8.3-1Source reference:
/affected/1/versions4.8.5-1Source reference:
/affected/1/versions4.8.7-1Source reference:
/affected/1/versions4.9.1-1Source reference:
/affected/1/versions5.0.2-1Source reference:
/affected/1/versions5.1.0-1Source reference:
/affected/1/versions5.1.0-2Source reference:
/affected/1/versions5.1.1-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
social-auth-core
Source reference: /affected/2/package/name
- Affected versions
- 4.6.1-1
Source reference:
/affected/2/versions4.8.1-1Source reference:
/affected/2/versions4.8.3-1Source reference:
/affected/2/versions4.8.5-1Source reference:
/affected/2/versions4.8.7-1Source reference:
/affected/2/versions4.9.1-1Source reference:
/affected/2/versions - Fixed versions
- 5.0.2-1
Source reference:
/affected/2/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": "social-auth-core",
"purl": "pkg:deb/debian/social-auth-core?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.3.0-1",
"4.4.2-1",
"4.4.2-2",
"4.5.3-1",
"4.5.4-1",
"4.5.6-1",
"4.6.1-1",
"4.8.1-1",
"4.8.3-1",
"4.8.5-1",
"4.8.7-1",
"4.9.1-1",
"5.0.2-1",
"5.1.0-1",
"5.1.0-2",
"5.1.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "social-auth-core",
"purl": "pkg:deb/debian/social-auth-core?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.6.1-1",
"4.8.1-1",
"4.8.3-1",
"4.8.5-1",
"4.8.7-1",
"4.9.1-1",
"5.0.2-1",
"5.1.0-1",
"5.1.0-2",
"5.1.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.2-1"
}
]
}
],
"package": {
"name": "social-auth-core",
"purl": "pkg:deb/debian/social-auth-core?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.6.1-1",
"4.8.1-1",
"4.8.3-1",
"4.8.5-1",
"4.8.7-1",
"4.9.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #25808 · Revision 1
- Added to Heist Feed
- Publisher date