Vulnerability · Published Jul 10, 2026 · Assigned by VulnCheck

CVE-2026-56335Capgo - Channel Configuration Mutation via Write-Scoped API Keys

Medium 6.5

In plain English

A medium-severity improper access control in Capgo from Capgo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 70.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Capgo before 12.128.2 contains an authorization bypass vulnerability where write-scoped API keys can directly mutate protected channel configuration fields through PostgREST by exploiting a null authentication check in the immutability trigger. Attackers with write API keys can modify sensitive channel attributes such as public, allow_emulator, and security-related flags outside intended application routes.

Affected products (as reported)

Vendor	Product	Versions
Capgo	Capgo	0 – before 12.128.2

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-ph9c-vwjq-pqhj) vendor-advisory
VulnCheck Advisory: Capgo - Channel Configuration Mutation via Write-Scoped API Keys third-party-advisory