PatchSiren cyber security CVE debrief
CVE-2026-56282 Capgo CVE debrief
CVE-2026-56282 is a medium-severity information disclosure vulnerability in Capgo before version 12.128.2. The vulnerability exists in the unauthenticated /replication endpoint, exposing internal PostgreSQL replication telemetry, including slot names and WAL LSN positions. This allows attackers to retrieve sensitive infrastructure details without authentication, which can be used for reconnaissance purposes. Affected users should prioritize patching to limit exposure.
- Vendor
- Capgo
- Product
- Unknown
- CVSS
- MEDIUM 6.9
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-20
- Original CVE updated
- 2026-06-23
- Advisory published
- 2026-06-20
- Advisory updated
- 2026-06-23
Who should care
Users of Capgo versions prior to 12.128.2 should be aware of this vulnerability and take immediate action to patch or mitigate the risk. This vulnerability is particularly concerning for organizations that use Capgo in production environments or have sensitive data stored in their PostgreSQL databases.
Technical summary
The vulnerability exists in the /replication endpoint of Capgo, which allows unauthenticated access to internal PostgreSQL replication telemetry. This telemetry includes sensitive information such as replication slot names, confirmed_flush_lsn, restart_lsn values, and database error messages. The CVSS score for this vulnerability is 6.9, indicating a medium level of severity. The vulnerability is classified as CWE-200, which is related to information disclosure.
Defensive priority
Medium priority due to potential for reconnaissance and sensitive data exposure
Recommended defensive actions
- Inventory Capgo installations to identify potentially vulnerable versions
- Review official advisories for patching guidance
- Apply vendor-supported remediation (upgrade to Capgo version 12.128.2 or later)
- Review and implement compensating controls to limit exposure
- Monitor for potential exploitation attempts
Evidence notes
The primary evidence for this vulnerability comes from the CVE record and the NVD detail page. The vulnerability is confirmed to exist in Capgo versions prior to 12.128.2. The /replication endpoint is exposed and can be accessed without authentication, allowing for the disclosure of sensitive PostgreSQL replication telemetry. Users should verify the version of Capgo they are using and check for any available patches or updates.
Official resources
This article is AI-assisted and based on the supplied source corpus.