CVE-2026-56213 | THREATINT

Description

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 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.

PUBLISHED Reserved 2026-06-19 | Published 2026-06-20 | Updated 2026-06-22 | Assigner VulnCheck

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

Missing Authorization

Product status

Default status

unaffected

Any version before 12.128.2

affected

12.128.2 (semver)

unaffected

Credits

Judel777 reporter

References

github.com/.../capgo/security/advisories/GHSA-g4hx-x8gc-x6rw (GHSA Advisory GHSA-g4hx-x8gc-x6rw) vendor-advisory

www.vulncheck.com/...s-poisoning-via-upsert-version-meta-rpc (VulnCheck Advisory: Capgo - Unauthenticated Cross-Tenant Metrics Poisoning via upsert_version_meta RPC) third-party-advisory

cve.org (CVE-2026-56213)

nvd.nist.gov (CVE-2026-56213)

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