PT-2026-54026 · Cap Go · Cap-Go

Judel777 · Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-56249

NVD

CVSS v3.1

7.6

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

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.

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-56249

Affected Products

Cap-Go

References · 3

• https://github.com/Cap-go/capgo/security/advisories/GHSA-vj24-j594-3wv3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56249 · Security Note
• https://vulncheck.com/advisories/capgo-unauthorized-channel-overwrite-and-ownership-takeover-via-post-channel-name-collision · Note