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CVE-2026-56329

Capgo

Description

Capgo before 12.128.2 contains a cross-tenant preview namespace collision vulnerability caused by non-bijective decoding of double underscores to dots in preview hostname parsing. Attackers can register app IDs with underscores that collide with other tenants- dotted app IDs, causing preview misrouting and denial of preview access for victim applications.

CVSS 6.4EPSS 0.23700000000000002%Risk 0.65
View source
Published
2026-07-10 15:16:42
Affected versions
<12.128.2
Type
Critical software
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L