Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck

CVE-2026-56248Capgo - Unauthenticated Denial-of-Service via audit_logs RLS Policy

High 7.5

In plain English

A high-severity uncontrolled resource consumption in capgo from Cap-go. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 62.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Cap-go capgo (capgo-backend) before 12.128.12 contains an unauthenticated denial-of-service vulnerability arising from the audit_logs table's Row-Level Security (RLS) policy when accessed via the Supabase PostgREST API. Because the PostgreSQL query planner executes costly logic before RLS rejection, unfiltered queries to the public.audit_logs endpoint using the public anon key consistently trigger statement timeouts (PostgREST error 57014). Under concurrency, this exhausts database resources and causes cascading HTTP 500 failures on unrelated endpoints (e.g. /orgs), resulting in an application-layer denial of service.

Affected products (as reported)

Vendor	Product	Versions
Cap-go	capgo	0 – before 12.128.12

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-5vgv-rqj5-5748) vendor-advisory
VulnCheck Advisory: Capgo - Unauthenticated Denial-of-Service via audit_logs RLS Policy third-party-advisory