CVE-2026-56255
MEDIUMCapgo - Denial of Service via Unlimited Demo App Creation
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-q2xx-6h9x-43fw)
https://github.com/Cap-go/capgo/security/advisories/GHSA-q2xx-6h9x-43fw
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Denial of Service via Unlimited Demo App Creation
https://www.vulncheck.com/advisories/capgo-denial-of-service-via-unlimited-demo-app-creation
Scores
CVSS v3
4.3
EPSS
0.0037
EPSS Percentile
30.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jun 22, 2026
Tracked Since
Jun 23, 2026