CVE-2026-56324 Capgo - Rate Limit Bypass via User-Controlled device_id Parameter
Attackers can bypass rate limits by rotating device_id parameters, flooding the database and causing service exhaustion in Capgo.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56324?
CVE-2026-56324 is a high-severity denial of service vulnerability in Capgo, published on 22 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-770
Which versions are affected by CVE-2026-56324?
How do I fix CVE-2026-56324?
No fix has been published for CVE-2026-56324 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-56324 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56324 exists.
Sources
Also known as GHSA-77p2-9rcr-5w27.