Rate Limit Bypass Vulnerability in Capgo by Capgo Inc.
CVE-2026-56324

8.8HIGH

Key Information:

Vendor

Capgo

Status
Capgo
Vendor
CVE Published:
22 June 2026

What is CVE-2026-56324?

Capgo versions before 12.128.2 are affected by a significant vulnerability that exists in the channel_self endpoint. This issue allows attackers to bypass the implemented rate limiting measures by manipulating the user-controlled device_id parameter. By rotating this parameter, an attacker can send multiple requests every second, which can overwhelm the channel_devices table and lead to database exhaustion. It is crucial for users to apply updates to prevent exploitation of this vulnerability.

Affected Version(s)

Capgo 0 < 12.128.2

Capgo 12.128.2

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-...
vendor-advisory
https://www.vulncheck.com/advisories/capgo-rate-limit-byp...
third-party-advisory

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Judel777
.