CVE-2026-56249

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.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3
https://www.vulncheck.com/advisories/capgo-unauthorized-channel-overwrite-and-ownership-takeover-via-post-channel-name-collision
https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3

Configurations

No configuration.

History

01 Jul 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3 -~~	() https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3 -

30 Jun 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-30 23:17

Updated : 2026-07-01 14:16

NVD link : CVE-2026-56249

Mitre link : CVE-2026-56249

CVE.ORG link : CVE-2026-56249

JSON object : View

Products Affected

No product.

CWE

CWE-285

Improper Authorization

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