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CVE-2026-59505 – Unauthenticated Information Disclosure via Broken Access Control – Priority ERP Por

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Summary

CVE-2026-59505 is an improper access control vulnerability (CWE-284) affecting the Portal Generator addon for Priority ERP, a product originally developed by Soft Solutions and now offered by Priority Software. The flaw allows a remote, unauthenticated attacker to access data on affected Priority ERP deployments without requiring any privileges or user interaction. It carries a CVSS v3.1 base score of 8.6 (High), driven by a network attack vector, low attack complexity, and a scope change that results in high confidentiality impact.

Technical details

  • Root cause: Improper access control (CWE-284) in the Portal Generator addon, which is used to expose Priority ERP data and functionality through customer-, supplier-, and employee-facing web portals.
  • Trigger conditions: The vulnerability affects any Priority ERP deployment running the Portal Generator addon that has not been upgraded to the "Priwall v3" access-control component/version.
  • Attack vector: Network-based (AV:N); no authentication (PR:N) or user interaction (UI:N) is required, and attack complexity is low (AC:L), meaning exploitation does not depend on a specific configuration or race condition.
  • Impact: The vulnerability results in a scope change (S:C) with high confidentiality impact (C:H) and no direct impact on integrity or availability (I:N/A:N), indicating unauthorized access to data that crosses a security boundary — consistent with an internet-exposed portal disclosing information it should not.
  • Exposure: The advisory explicitly notes the risk applies to Priority infrastructure that is exposed to the internet, underscoring that internet-facing Portal Generator instances are the primary at-risk population.

Affected software

  • Priority ERP — Portal Generator addon (originally by Soft Solutions): all versions that do not include Priwall v3.

Severity

  • CVSS v3.1 Base Score: 8.6 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Upgrade the Portal Generator addon to a version that includes Priwall v3, which addresses the access control weakness.
  • If patching is not immediately possible:
    • Do not expose Priority ERP Portal Generator infrastructure directly to the internet; restrict access to trusted internal networks or via VPN.
    • Where feasible, migrate to Modern Priority Portals by Priority Software, which is identified as an alternative unaffected by this issue.
    • Review portal access logs for anomalous or unauthenticated data access attempts while remediation is underway.

References

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