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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.

PUBLISHED Reserved 2026-06-19 | Published 2026-06-23 | Updated 2026-06-23 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Uncontrolled Resource Consumption

Product status

Default status
unaffected

Any version before 12.128.12
affected

12.128.12 (semver)
unaffected

Credits

Judel777 reporter

References

github.com/.../capgo/security/advisories/GHSA-5vgv-rqj5-5748 exploit

github.com/.../capgo/security/advisories/GHSA-5vgv-rqj5-5748 (GitHub Security Advisory (GHSA-5vgv-rqj5-5748)) vendor-advisory

www.vulncheck.com/...al-of-service-via-audit-logs-rls-policy (VulnCheck Advisory: Capgo - Unauthenticated Denial-of-Service via audit_logs RLS Policy) third-party-advisory

cve.org (CVE-2026-56248)

nvd.nist.gov (CVE-2026-56248)

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