# CVE-2026-5781: MphRx Minerva privilege escalation in moUser update endpoint

Source: https://junglewise.ai/threats/cve-2026-5781-mphrx-minerva-privilege-escalation-in-mouser-update-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-28. Updated: 2026-05-28  
License: CC BY 4.0 with a link back

CVE-2026-5781 · Severity: high · CVSS 8.8 · Published 2026-04-28

MphRx Minerva, a health data platform, contains a security flaw that allows certain users to upgrade their own account permissions. An attacker with basic user-modification rights can bypass standard security controls to grant themselves full administrator access. This could lead to unauthorized access to sensitive medical data and complete control over the platform's operations.

Technologies: [Agilonhealth Minerva](https://junglewise.ai/threats/technologies/minerva). Vendors: [Agilonhealth](https://junglewise.ai/threats/vendors/agilonhealth).

## Quick answers

**Is CVE-2026-5781 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-5781 being exploited in the wild.

**How severe is CVE-2026-5781?** High severity, with a CVSS score of 8.8, published 28 April 2026.

**Which products and versions are affected?** MphRx Minerva 3.6.0.

**Is there a fix for CVE-2026-5781?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-5781 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-5781?** Check whether you run Agilonhealth Minerva. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An improper authorization vulnerability (CWE-285) exists in the '/minerva/moUser/update' endpoint of MphRx Minerva V3.6.0. The flaw is triggered when an authenticated user with existing user-modification privileges submits a specially crafted HTTP request containing a manipulated 'identifier' field. Because the application fails to properly validate the authorization level associated with this identifier during the update process, a low-privileged user can escalate their role to administrator. Notably, this exploit cannot be performed through the standard graphical user interface and requires direct manipulation of network requests. As of the advisory date, no official patch has been reported.

## Affected products

- MphRx Minerva 3.6.0

## Timeline

- 2026-04-28: advisory: Initial disclosure by INCIBE-CERT
- 2026-04-28: disclosed: Vulnerability published to NVD

## References

- [https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-mphrxs-minerva](https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-mphrxs-minerva)

## Related threats

- [An insecure direct object reference (IDOR) vulnerability in MphRx's Minerva V3.6.0, specifically in the endpoint…](https://junglewise.ai/threats/cve-2026-5780-an-insecure-direct-object-reference-idor-vulnerability-in-mphrx-s)
- [An insecure direct object reference (IDOR) vulnerability in MphRx's Minerva V3.6.0, specifically in the…](https://junglewise.ai/threats/cve-2026-5779-an-insecure-direct-object-reference-idor-vulnerability-in-mphrx-s)