What is CVE-2026-56221?

CVE-2026-56221 is a medium-severity vulnerability in Cap-go Capgo, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-06-22.

How severe is CVE-2026-56221?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SQL Injection in Cap-go Capgo

CVE-2026-56221

Cap-go before 12.128.2 contains multiple SQL injection vulnerabilities in cloudflare.ts where user-controlled values from API request bodies are interpolated directly into SQL query strings without sanitization or parameterization. Authent…

Vulnerability class: SQL Injection

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Cap-go Capgo — versions 0, 12.128.2

Weakness classification (CWE)

CWE-89 — SQL Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56221?: CVE-2026-56221 is a medium-severity vulnerability in Cap-go Capgo, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-06-22.
How severe is CVE-2026-56221?: Medium severity. CVSS v3 base score is 6.5 out of 10.