CVE-2026-56255
MEDIUM EPSS 18.9%
Published Jun 22, 20261w ago · Modified Jun 23, 20261w ago
5.3 CVSS 4.0
Published Jun 22, 2026 1w ago
Last Modified Jun 23, 2026 1w ago
Description
Capgo before 12.128.2 contains a denial of service vulnerability in the POST /app/demo endpoint that allows authenticated users with org write permissions to create unlimited demo applications without rate limiting or quota enforcement. Attackers can repeatedly invoke this endpoint to generate approximately 138 database write operations per request, causing degraded performance, increased costs, and potential service instability.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
18.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-770
References 2
- github.com https://github.com/Cap-go/capgo/security/advisories/GHSA-q2xx-6h9x-43fw
- vulncheck.com https://www.vulncheck.com/advisories/capgo-denial-of-service-via-unlimited-demo-app-creation
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.