CVE-2026-56249 HIGH

CVE-2026-56249: Capgo - Unauthorized Channel Overwrite and Ownership Takeover via POST /channel Name Collision

Vendor Capgo
Product Capgo
Weakness CWE-285
Published June 30, 2026
Last update July 1, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Capgo before 12.128.2 contains an authorization bypass vulnerability in the channel creation endpoint that allows authenticated users to overwrite existing channels by reusing their names. Attackers with app.create_channel permission can exploit a logic mismatch between existence validation and upsert operations to reassign channel ownership and modify critical production channel configurations.

Key dates

02Disclosure timeline

June 30, 2026 CVE published
July 1, 2026 Record updated