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Vulnerability record · CVE-2026-56324 · published 22 June 2026

CVE-2026-56324: Allocation without limits vulnerability

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.

8.8 CVSS 4.0 High EPSS 0.46% · top 62.2% CWE-770 · Allocation without limits Deferred
8.8CVSS 4.0 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
24 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/Cap-go/capgo/security/advisories/GHSA-77p2-9rcr-5w27
https://www.vulncheck.com/advisories/capgo-rate-limit-bypass-via-user-controlled-device-id-parameter
https://github.com/Cap-go/capgo/security/advisories/GHSA-77p2-9rcr-5w27

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Source: NIST National Vulnerability Database (record CVE-2026-56324), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.