Skip to content
CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-56306

Capgo - Subkey Enforcement Bypass via x-limited-key-id Header Parsing

Description

Capgo before 12.128.2 contains a weak parsing vulnerability in the x-limited-key-id header that allows attackers to bypass subkey enforcement by submitting malformed values, zero, or duplicate headers that result in NaN or falsy values. Remote attackers can manipulate the x-limited-key-id header to disable limited key scoping and execute requests using the main API key context instead of restricted subkey permissions.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Capgo Capgo

Default version status: unaffected

  • 0 to < 12.128.2affected
  • 12.128.2unaffected

References