PT-2026-51043 · Cap Go · Cap-Go

Judel777 · Published 2026-06-20 · Updated 2026-06-20 · CVE-2026-56213

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Capgo versions prior to 12.128.2

Description An authorization bypass exists in the public.upsert version meta() SECURITY DEFINER function exposed via PostgREST RPC. This allows unauthenticated attackers to insert arbitrary rows into version meta for any app id by calling the RPC endpoint with a public anon key. This can be used to poison storage metrics, resulting in persistent false data in dashboards and the triggering of incorrect alerts across victim applications.

Recommendations Update to version 12.128.2 or later. As a temporary workaround, restrict access to the public.upsert version meta() function to minimize the risk of exploitation.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-56213

Affected Products

Cap-Go

References · 5

• https://github.com/Cap-go/capgo/security/advisories/GHSA-g4hx-x8gc-x6rw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56213 · Security Note
• https://twitter.com/CVEnew/status/2068163624510652689 · Twitter Post
• https://twitter.com/infoflowcloud/status/2068164745425715242 · Twitter Post
• https://vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-poisoning-via-upsert-version-meta-rpc · Note