CVE-2026-56229 Capgo CVE debrief

Who should care

Organizations using Capgo for mobile app development should be aware of this vulnerability and take immediate action to protect their applications. Specifically, teams responsible for mobile app development, security, and infrastructure should prioritize patching Capgo to version 12.128.2 or later. Additionally, security teams should review their current configurations and monitor for potential exploitation attempts.

Technical summary

The vulnerability in Capgo allows attackers with limited API keys restricted to a single app to retrieve build status and logs from other apps. This is achieved by providing an authorized app_id while using a job_id from an unauthorized app. The exposure includes sensitive build information such as logs, metadata, and potentially credentials. The issue arises from inadequate authorization checks in the /build/status and /build/logs endpoints.

Defensive priority

High priority due to potential for sensitive information disclosure and exploitation by attackers with limited API keys.

Recommended defensive actions

• Apply the patch by updating Capgo to version 12.128.2 or later.
• Review and restrict API key permissions to ensure they are not overly permissive.
• Monitor /build/status and /build/logs endpoints for suspicious activity.
• Implement additional logging and monitoring to detect potential exploitation attempts.
• Conduct a thorough review of Capgo configurations and security settings.

Evidence notes

The primary evidence for this vulnerability comes from the CVE record and references provided by Vulncheck. The vulnerability affects Capgo versions before 12.128.2. Defenders should verify the current version of Capgo in use and confirm that it is not exposed to the internet or untrusted networks. Additionally, reviewing API key usage and restricting permissions can help mitigate the risk.

Official resources