CVE-2026-56213 | Capgo before 12.128.2 contains an authorization bypass vulne… | CVSS 5.3 MEDIUM

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.

Metadata

CVE ID: CVE-2026-56213
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-19 21:43 UTC
Published: 2026-06-20 00:14 UTC
Last updated: 2026-06-20 00:14 UTC
Primary CWE: CWE-862
Missing Authorization
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

5.3 MEDIUM CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
Capgo	Capgo	—	0 < 12.128.2, 12.128.2

Weakness (CWE)

CWE	Source	Description
CWE-862	cna	Missing Authorization

CVSS scores (2)

Score	Severity	Version	Source	Vector
6.9	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
5.3	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References (2)

GHSA Advisory GHSA-g4hx-x8gc-x6rw https://github.com/Cap-go/capgo/security/advisories/GHSA-g4hx-x8gc-x6rw
VulnCheck Advisory: Capgo - Unauthenticated Cross-Tenant Metrics Poisoning via upsert_version_meta RPC https://www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-poisoning-via-upsert-version-meta-rpc