CVE-2026-56243

HIGH 8.1

Capgo - Hashed API Key Enforcement Bypass via PostgREST/RLS Plane

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

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-key enforcement by sending plaintext API keys directly to the PostgREST/RLS plane to access protected resources.

CWE	CWE-288
Vendor	capgo
Product	capgo
Published	Jun 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Capgo / Capgo

0 < 12.128.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Cap-go/capgo/security/advisories/GHSA-6g74-8cpq-g2c8 vulncheck.com: https://www.vulncheck.com/advisories/capgo-hashed-api-key-enforcement-bypass-via-postgrest-rls-plane

Credits

🔍 Judel777