UnratedFix available

DEBIAN-CVE-2026-57176

Type: advisorySource: OSV1 source record

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend user_id as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop could then be authenticated as the local account previously associated with the same numeric user ID from another shop. The issue affects applications using the Vend OAuth2 backend with more than one Vend shop. Version 5.0.0 patches the issue.

Announced 24 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-57176

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-2026-57176

social-auth-core

Source reference: /affected/0/package/name

Affected versions: 4.3.0-1
Source reference: /affected/0/versions
4.4.2-1
Source reference: /affected/0/versions
4.4.2-2
Source reference: /affected/0/versions
4.5.3-1
Source reference: /affected/0/versions
4.5.4-1
Source reference: /affected/0/versions
4.5.6-1
Source reference: /affected/0/versions
4.6.1-1
Source reference: /affected/0/versions
4.8.1-1
Source reference: /affected/0/versions
4.8.3-1
Source reference: /affected/0/versions
4.8.5-1
Source reference: /affected/0/versions
4.8.7-1
Source reference: /affected/0/versions
4.9.1-1
Source reference: /affected/0/versions
5.0.2-1
Source reference: /affected/0/versions
5.1.0-1
Source reference: /affected/0/versions
5.1.0-2
Source reference: /affected/0/versions
5.1.1-1
Source 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/versions
4.8.1-1
Source reference: /affected/1/versions
4.8.3-1
Source reference: /affected/1/versions
4.8.5-1
Source reference: /affected/1/versions
4.8.7-1
Source reference: /affected/1/versions
4.9.1-1
Source reference: /affected/1/versions
5.0.2-1
Source reference: /affected/1/versions
5.1.0-1
Source reference: /affected/1/versions
5.1.0-2
Source reference: /affected/1/versions
5.1.1-1
Source 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/versions
4.8.1-1
Source reference: /affected/2/versions
4.8.3-1
Source reference: /affected/2/versions
4.8.5-1
Source reference: /affected/2/versions
4.8.7-1
Source reference: /affected/2/versions
4.9.1-1
Source 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-2026-57176.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-2026-57176.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-2026-57176.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #25806 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 06:58:40 GMT
Publisher date: Thu, 24 Sep 2026 18:17:14 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-57176 · Revision 1Source updated