CVE-2026-5781
Access Control in Agilonhealth Minerva 3.6.0
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-5781 is a high-severity Improper Authorization (CWE-285) vulnerability in Agilonhealth Minerva. Its CVSS base score is 8.5 (High).
Operationally, ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-25 (Reference Monitor) — see the control section below for these in your framework.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-26040
- 🇪🇸 INCIBE: www.incibe.es
Vulnerability Data
An authorization vulnerability in MphRx's Minerva V3.6.0, specifically in the '/minerva/moUser/update' endpoint, could allow an authenticated user with user modification privileges to escalate their privileges by sending an HTTP request with a manipulated 'identifier' field. Successful exploitation of this vulnerability…
more
could allow an authenticated user to obtain administrator privileges. It is not possible to escalate privileges through the graphical user interface.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Mandates that access-control decisions are made and applied to each request before access occurs.
Requires a tamperproof, always-invoked reference monitor that performs authorization checks.
Directly requires enforcement of approved authorizations for every access request, stopping improper or missing checks.
Limits granted privileges so that even a bypassed check affects fewer resources.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
A.8.3 directly mandates and configures the authorization mechanisms (identity/group rights, dynamic access rules, isolation, credential enforcement) that stop CWE-285 exploitation; the bounded remainder is non-authorization exposure vectors such as error messages or observable discrepancies.
Mapping access rights to information classification and business requirements forces correct enforcement of authorization decisions, blocking the incorrect authorization weakness at the policy and implementation stage.
Independent reviewers evaluate whether authorization logic matches policy, thereby reducing the window in which incorrect or missing authorization checks remain in production.
By requiring managers to verify that authorization decisions match policy and to remediate deviations, the control limits the persistence of incorrect or missing authorization checks.
Mandatory review and acceptance testing of changes before deployment reduces the chance that an authorization decision will be implemented incorrectly or will grant unintended rights.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-285, a class-level weakness. Rules are authored against its narrower children: CWE-552.