What is CVE-2026-56243?

CVE-2026-56243 is a high-severity vulnerability in Capgo, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 8.1/10. Published 2026-06-23.

How severe is CVE-2026-56243?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Capgo

CVE-2026-56243

Capgo before 12.128.2 contains a security control bypass vulnerability where the PostgREST/RLS plane accepts plaintext API keys through the capgkey header despite enforce_hashed_api_keys being enabled. Attackers can bypass org-level hashed…

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Capgo — versions 0, 12.128.2

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

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

Frequently asked questions

What is CVE-2026-56243?: CVE-2026-56243 is a high-severity vulnerability in Capgo, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 8.1/10. Published 2026-06-23.
How severe is CVE-2026-56243?: High severity. CVSS v3 base score is 8.1 out of 10.