CVE-2026-76876 puemos CVE debrief

Who should care

Organizations using Craftplan before version 0.5.1 should be aware of this vulnerability and take steps to mitigate it. Affected operators, platforms, and security teams should prioritize patching to prevent unauthorized access to sensitive credentials. Vulnerability management and security teams should review compensating controls for exposed systems while remediation is scheduled and verified. Asset inventory and monitoring teams should check relevant logs for exposed assets that need extra review. This vulnerability affects systems using Craftplan, particularly those with sensitive credential access, and requires immediate attention from security teams and operators to prevent potential exploitation. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. Operators should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Platforms should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Compensating controls should be implemented for exposed systems while remediation is scheduled and verified. Monitoring and detection teams should check relevant logs for exposed assets that need extra review. Asset inventory teams should review and update their records accordingly. Rollback and change window management teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Source tracking and verification should be performed to ensure the accuracy of the information and to prevent potential exploitation. Security teams should prioritize patching to version 0.5.1 or later and conduct inventory checks for Craftplan usage. Implementing compensating controls for sensitive credential access is also recommended. Additionally, security teams should review and update their incident response plans to address potential exploitation of this vulnerability. They should also consider implementing monitoring and detection controls to identify potential exploitation attempts. By taking these steps, organizations can reduce the risk of exploitation.

Technical summary

Craftplan before 0.5.1 contains a broken access control vulnerability allowing unauthenticated attackers to read sensitive credentials by exploiting an unconditional authorization policy on the Settings resource. Attackers can send a GET request to the settings API endpoint with a valid record ID to retrieve decrypted SMTP passwords, email API keys, and email API secrets due to the read policy using an always-allow authorization check that bypasses all identity verification. This vulnerability has a CVSS score of 8.2 and is classified as HIGH severity.

Defensive priority

Organizations using Craftplan before version 0.5.1 should prioritize patching to prevent unauthorized access to sensitive credentials.

Recommended defensive actions

• Patch Craftplan to version 0.5.1 or later
• Conduct inventory checks for Craftplan usage
• Implement compensating controls for sensitive credential access
• Review official advisories or CVE records to validate affected scope, severity, and vendor guidance
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Evidence is limited; primary official records indicate a broken access control vulnerability in Craftplan before 0.5.1 allows unauthenticated attackers to read sensitive credentials. Verification of affected scope and inventory checks are recommended. The vulnerability was published on 2026-08-21T20:16:44.680Z and has not been modified since then. Evidence grounding suggests that defenders should verify affected product deployments, review official advisories, and plan vendor-supported updates.

Official resources