Vulnerability · Published Jun 22, 2026 · Assigned by VulnCheck
CVE-2026-56324Capgo - Rate Limit Bypass via User-Controlled device_id Parameter
High 8.2
In plain English
A high-severity resource allocation without limits in Capgo from Capgo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.3%top 74.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- GitHub Security Advisory (GHSA-77p2-9rcr-5w27) vendor-advisory
- VulnCheck Advisory: Capgo - Rate Limit Bypass via User-Controlled device_id Parameter third-party-advisory