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CVE-2026-44595 Details

Description

Yamcs is a mission control framework. Prior to 5.12.7, the IAM API endpoints listUsers, getUser, listGroups, and getGroup in yamcs-core did not enforce the required SystemPrivilege.ControlAccess check in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java, so any authenticated user, even one with low or no privileges, could enumerate all user accounts in the system including their usernames, superuser status, and group memberships. This issue is fixed in versions 5.12.7 and 5.13.0.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29	CISA-ADP	ExploitVendor Advisory
https://github.com/yamcs/yamcs/commit/0e12b518f103f24681299318a30a460fe4327b88	[email protected]	Patch
https://github.com/yamcs/yamcs/commit/e90099fba98e96214217c195b6a5b87b5f46e51c	[email protected]	Patch
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7	[email protected]	Release Notes
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0	[email protected]	Release Notes
https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29	[email protected]	ExploitVendor Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-862	Missing Authorization	[email protected]

Affected Products

Product	Versions
spaceapplications yamcs	< 5.12.7
CPE cpe:2.3:a:spaceapplications:yamcs:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Jul 18, 2026	CVE Modified	CISA-ADP
Jul 17, 2026	Initial Analysis	[email protected]
Jul 16, 2026	New CVE Received	[email protected]