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CVE-2026-62322

CVE-2026-62322 · Python Social Auth: Login CSRF in LINE backend (LineOAuth2) — missing OAuth state validation (incomplete fix of 5.0.0 campaign)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Python Social Auth is a social authentication/registration mechanism. Prior to 5.0.2, the LINE backend exchanges an authorization code without validating the returned OAuth state. An attacker can begin authorization for an attacker-controlled LINE account and induce a victim to visit the resulting callback URL, causing the application to log the victim into the attacker's account. When account linking is enabled, the same missing validation can link the attacker's LINE identity to the victim's existing account and create a persistent unauthorized login path. Only applications with the LINE backend enabled are affected. This issue is fixed in version 5.0.2.

CVSS 6.5 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • social-core

    Versions
    • < 5.0.2: Affected

    No fix published

  • social-auth-core 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
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • social-auth-core 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
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • social-auth-core 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
    Affected ranges
    • ECOSYSTEM: < 5.0.2-1

    Update to 5.0.2-1

  • social-auth-core PyPI

    Versions
    • 0.0.1
    • 0.1.0
    • 0.2.0
    • 0.2.1
    • 1.0.0
    • 1.0.1
    • 1.1.0
    • 1.2.0
    • 1.3.0
    • 1.4.0
    • 1.5.0
    • 1.6.0
    • 1.7.0
    • 2.0.0
    • 3.0.0
    • 3.1.0
    • 3.2.0
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.4.0
    • 4.0.2
    • 4.0.3
    • 4.1.0
    • 4.2.0
    • 4.3.0
    • 4.4.0
    • 4.4.1
    • 4.4.2
    • 4.5.0
    • 4.5.1
    • 4.5.2
    • 4.5.3
    • 4.5.4
    • 4.5.5
    • 4.5.6
    • 4.6.0
    • 4.6.1
    • 4.7.0
    • 4.8.0
    • 4.8.1
    • 4.8.2
    • 4.8.3
    • 4.8.4
    • 4.8.5
    • 4.8.6
    • 4.8.7
    • 4.9.0
    • 4.9.1
    • 5.0.0
    • 5.0.1
    Affected ranges
    • ECOSYSTEM: < 5.0.2

    Update to 5.0.2

  • social-auth-core Ubuntu:20.04:LTS

    Versions
    • 3.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • social-auth-core Ubuntu:22.04:LTS

    Versions
    • 3.1.0-1.1
    • 4.1.0-1
    • 4.2.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • social-auth-core Ubuntu:24.04:LTS

    Versions
    • 4.4.2-2
    • 4.5.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • social-auth-core Ubuntu:26.04:LTS

    Versions
    • 4.6.1-1
    • 4.8.1-1
    • 4.8.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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