CVE-2026-72564

9.6

fosrl · Pangolin

An improper authorization vulnerability in fosrl Pangolin through v1.20.0 allows an authenticated remote attacker to access resources across organizations by reusing valid access tokens.

Executive summary

A critical authorization bypass vulnerability in fosrl Pangolin allows authenticated attackers to access unauthorized resources, posing a severe risk to data confidentiality and integrity.

Vulnerability

This is an authorization bypass vulnerability (CWE-639) where the application fails to validate if an access token is bound to a specific resource, allowing an authenticated attacker to perform actions on resources they should not access.

Business impact

The ability to access any resource within any organization using a single valid token represents a total compromise of the multi-tenant isolation within the platform. Given the CVSS score of 9.6, this flaw permits unauthorized data exfiltration and administrative manipulation, which could lead to significant regulatory non-compliance and loss of customer trust.

Remediation

Immediate Action: Upgrade fosrl Pangolin to the latest version, ensuring that the fix for token validation is fully implemented.

Proactive Monitoring: Review access logs for anomalous patterns, specifically looking for users attempting to access resource IDs that deviate from their typical operational scope.

Compensating Controls: Implement strict network segmentation and egress filtering to limit the potential blast radius if an account is compromised.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

This vulnerability is critical because it invalidates the fundamental security boundary between users and organizations. Organizations utilizing Pangolin must prioritize patching immediately to prevent potential unauthorized access to sensitive cross-tenant data.