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Advisory record · GHSA-526j-582w-7fm9

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

CVSS 6.5 MediumEPSS 0.0015 · 4th percentile

Published by the GitHub Advisory Database at 15 Oct 2026, 20:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
social-auth-corePyPI<5.0.25.0.2
Identifiers
GHSA-526j-582w-7fm9 · CVE-2026-62322
Weakness (CWE)
CWE-352
Tags
Published
15 Oct 2026
Updated
15 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Python Social Auth's social-auth-core package, versions before 5.0.2, is vulnerable in its LINE Login backend (LineOAuth2), which did not validate the OAuth state returned during login. An attacker can send a victim a crafted callback carrying the attacker's own LINE authorization code, which can log the victim into the attacker's account or, if account linking is enabled, link the attacker's LINE identity to the victim's account. Upgrade social-auth-core to version 5.0.2. Only applications that enable the LINE backend are affected.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0015, the 4th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.