Is CVE-2026-56243 actively exploited?

No active exploitation of CVE-2026-56243 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-56243 be exploited remotely?

Yes. CVE-2026-56243 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-56243?

CVE-2026-56243 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-56243

CWE-288Published: June 23, 2026· Updated: Jun 23, 2026

8.1

CVSS v3.1

EPSS:0.27%probability of exploitation in 30 daysPercentile:18.9th

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.

NVD Source

Technical Analysis

CVE-2026-56243 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.