CVE-2026-56282

Medium

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /replication endpoint that exposes internal PostgreSQL replication telemetry including slot names and WAL LSN positions. Attackers can access this endpoint without authentication to retrieve sensitive infrastructure details such as replication slot names, confirmed_flush_lsn, restart_lsn values, and database error messages for reconnaissance purposes.

SeverityMedium

CVSS5.3

Exploit probability—

ProductCapgo

PublishedJun 20, 2026

First seenJun 20, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

Capgo Capgo12.128.2 or later

Vendor advisories

github.com/Cap-go/capgo/security/advisories/GHSA-q6gm-xfwr-44f5

Affected products

Product	Affected versions	Fixed in
Capgo Capgo	v < 12.128.2	12.128.2

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