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VulnerabilityPublished Updated

CVE-2026-57176: python-social-auth social-core · Authentication Bypass by Alternate Name

Affects python-social-auth social-coreSource CVE Database V5

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Not known to be exploited · CVSS 6.8 Medium : upgrade to 5.0.0 when convenient.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.0.0
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Upgrade python-social-auth social-core to 5.0.0.

Affected software

ProductAffectedFixed in
python-social-authsocial-coreAffected
  • <5.0.0
Fixed in
  • 5.0.0
PyPIsocial-corepkg:pypi/social-coreOther threatsAffected
  • <5.0.0
Fixed in
  • 5.0.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade python-social-auth social-core to version 5.0.0 or later, which patches the authentication bypass by properly differentiating users from different Vend shops. No other mitigation is indicated by the vendor advisory.

Description

CVE-2026-57176 is an authentication bypass vulnerability in python-social-auth's social-core component affecting the Vend OAuth2 backend prior to version 5.0.0. The issue arises when multiple Vend shops authenticate through the same application, causing user ID collisions due to reliance on numeric Vend user_id as the social-auth UID. This allows a user from one shop to be authenticated as a different local account associated with the same numeric user ID from another shop. The vulnerability is patched in version 5.0.0.

References

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