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Advisories

Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header

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severity
high
date
Affecting

  • Capgo >= 0, < 12.128.2

CWE
  • CWE-863 Incorrect Authorization
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Judel777
Description
Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey.

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