Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The Vend OAuth2 backend in social-auth-core, versions before 5.0.0, identified users only by their numeric Vend user ID, so accounts from different Vend shops could collide. An attacker who has a Vend account in one shop can be authenticated as a local account linked to the same numeric user ID from another shop, which is an account takeover. Upgrade to social-auth-core 5.0.0 or later; if upgrading is not possible, restrict the Vend backend to a single trusted shop or disable it.
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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0022, the 12th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:09 UTC First seen by agentprime
- 31 Oct 2026, 14:09 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-fp7w-m676-w7gc
- OSV: GHSA-fp7w-m676-w7gc
- github.com/python-social-auth/social-core/security/advisories/GHSA-fp7w-m676-w7gc
- nvd.nist.gov/vuln/detail/CVE-2026-57176
- github.com/python-social-auth/social-core/pull/1795
- github.com/python-social-auth/social-core/commit/dee7ad1785877afd355dd6860598823d2631b76e
- github.com/python-social-auth/social-core
- github.com/python-social-auth/social-core/releases/tag/5.0.0