CVE-2026-56282 Details
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.
An information disclosure vulnerability exists in Capgo versions prior to 12.128.2, specifically within the unauthenticated /replication endpoint. This vulnerability exposes internal PostgreSQL replication telemetry, including slot names and Write-Ahead Logging (WAL) Log Sequence Number (LSN) positions. Attackers can access this endpoint without authentication to gather sensitive infrastructure details such as replication slot names, confirmed_flush_lsn and restart_lsn values, and database error messages, which could be used for reconnaissance purposes.
Users are advised to update to Capgo version 12.128.2 or later. If a public health endpoint is necessary, it should be limited to minimal status information and not include detailed telemetry or raw database error fields.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 20, 2026CISA-ADP
Assessed Jun 23, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Cap-go/capgo/security/advisories/GHSA-q6gm-xfwr-44f5 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/Cap-go/capgo/security/advisories/GHSA-q6gm-xfwr-44f5 | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-replication-endpoint | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Capgo | < 12.128.2 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 23, 2026 | CVE Modified | CISA-ADP |
| Jun 20, 2026 | New CVE Received | [email protected] |