CVE-2026-56249

Published: Jun 30, 2026Modified: Jul 1, 2026Deferred

7.2

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

Description

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.

Related CWEs

CWE-285

Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

References (3)

https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/capgo-unauthorized-channel-overwrite-and-ownership-takeover-via-post-channel-name-collision

Source: disclosure@vulncheck.com

https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.