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Advisories

Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning

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severity
high
date
Affecting

  • Capgo >= 0, < 12.128.12

CWE
  • CWE-639 Authorization Bypass Through User-Controlled Key
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Credit
Judel777
Description
Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.

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