Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck
CVE-2026-56243Capgo - Hashed API Key Enforcement Bypass via PostgREST/RLS Plane
High 8.1
In plain English
A high-severity authentication bypass in Capgo from Capgo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.3%top 71.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-6g74-8cpq-g2c8) vendor-advisory
- VulnCheck Advisory: Capgo - Hashed API Key Enforcement Bypass via PostgREST/RLS Plane third-party-advisory