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Vulnerability details

CVE-2026-56082

Capgo Capgo

Capgo - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC

CVSS 4.0
8.7High

Official description

Capgo (Cap-go/capgo) before 12.128.2 contains an improper access control vulnerability in the SECURITY DEFINER PostgREST RPC function public.record_build_time, which is granted to the anon role and callable with only the public Supabase publishable (sb_publishable_*) anon key. An unauthenticated attacker can insert rows into public.build_logs for arbitrary organizations and, because the function uses ON CONFLICT (build_id, org_id) DO UPDATE, can overwrite existing usage/billing records by reusing the same build_id for a target org. This enables cross-tenant tampering of billing build logs and financial-impact denial of service by inflating billable build time.

CVSS scores

ScoreVersionSourceVector
8.7High 4.0 CVEProject cvelistV5 (CNA) (VulnCheck) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
7.5High 3.1 CVEProject cvelistV5 (CNA) (VulnCheck) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

VendorProductVersionsSource
Capgo Capgo v < 12.128.2 CVEProject cvelistV5 (CNA)

References and advisories

2
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Details

Published
2026-06-20
Last updated
2026-11-08
State
Published
Assigner (CNA)
VulnCheck

Exploit prediction (EPSS)

0.37%
Probability of exploitation in 30 days
31.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
Proof of concept
Technical impact
Partial

Weaknesses (CWE)

  • CWE-284
    Improper Access Control