CVE-2026-56324

Deferred Deferred - Pending Action

Rate Limit Bypass in Capgo via Device ID Rotation

Publication date: 2026-06-22

Last updated on: 2026-06-24

Assigner: VulnCheck

Description

Capgo before 12.128.2 contains a rate limit bypass vulnerability in the channel_self endpoint that allows attackers to circumvent rate limiting by rotating the user-controlled device_id parameter. Attackers can send multiple requests per second by changing device_id values to flood the channel_devices table and cause database exhaustion.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-22

Last Modified

2026-06-24

Generated

2026-07-13

AI Q&A

2026-06-23

EPSS Evaluated

2026-07-11

NVD

CVE-2026-56324

Affected Vendors & Products

Vendor	Product	Version / Range
capgo	capgo	to 12.128.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Capgo versions before 12.128.2 and involves a rate limit bypass in the channel_self endpoint.

Attackers can exploit this by rotating the user-controlled device_id parameter, which allows them to circumvent the rate limiting mechanism.

By changing device_id values, attackers can send multiple requests per second, flooding the channel_devices table and causing database exhaustion.

Impact Analysis

This vulnerability can lead to database exhaustion by allowing attackers to flood the channel_devices table with excessive requests.

Such an attack can degrade or disrupt the normal operation of the affected system, potentially causing denial of service or performance issues.

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