{"id":"CVE-2026-56213","title":"Capgo - Unauthenticated Cross-Tenant Metrics Poisoning via upsert_version_meta RPC","summary":"Capgo before 12.128.2 contains an authorization bypass vulnerability in the public.upsert_version_meta SECURITY DEFINER function exposed via PostgREST RPC, allowing unauthenticated attackers to insert arbitrary rows into version_meta for…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"Capgo","product":"Capgo","affected":["Capgo < 12.128.2"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-22T14:22:13.228614Z"},"exploitAvailable":true,"published":"2026-06-20","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:05:34.654Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56213","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-g4hx-x8gc-x6rw","label":"GitHub Security Advisory (GHSA-g4hx-x8gc-x6rw)"},{"url":"https://www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-poisoning-via-upsert-version-meta-rpc","label":"VulnCheck Advisory: Capgo - Unauthenticated Cross-Tenant Metrics Poisoning via upsert_version_meta RPC"}],"tags":["cve.org","exploit-available"],"epss":0.00353,"epssPercentile":0.29134,"ingestedAt":"2026-11-08T14:51:22.368Z","slug":"CVE-2026-56213","body":"## Overview\n\nCapgo before 12.128.2 contains an authorization bypass vulnerability in the public.upsert_version_meta SECURITY DEFINER function exposed via PostgREST RPC, allowing unauthenticated attackers to insert arbitrary rows into version_meta for any app_id. Attackers can exploit this by calling the RPC endpoint with a public anon key to poison storage metrics, causing persistent false data in dashboards and triggering incorrect alerts across victim applications.\n\n## Affected\n\n- `Capgo < 12.128.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}