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CVE-2026-56303

7.5 · HIGH

Capgo before 12.128.2 contains an information disclosure vulnerability in the find_apikey_by_value PostgreSQL function marked SECURITY DEFINER and executable by the anon role.

Published Jul 11, 2026CWE-200EPSS 0.46%

Overview

CVE-2026-56303 is a high-severity vulnerability. It was published on July 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Capgo before 12.128.2 contains an information disclosure vulnerability in the find_apikey_by_value PostgreSQL function marked SECURITY DEFINER and executable by the anon role. Unauthenticated attackers can call this function via the /rest/v1/rpc/find_apikey_by_value endpoint to retrieve sensitive API key metadata including user_id, mode, org scoping, and expiration details when supplied a valid key value.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Cap-go/capgo/security/advisories/GHSA-2xjq-h43m-592fRefwww.vulncheck.com/advisories/capgo-unauthenticated-api-key-metadata-disclosure-via-security-definer-rpc-functionGitHubgithub.com/Cap-go/capgo/security/advisories/GHSA-2xjq-h43m-592f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-56303?

CVE-2026-56303 is a high-severity vulnerability. It was published on July 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-56303?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-56303?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-56303?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-56303 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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