CVE-2026-55547
Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits SystemPrivilege.ControlAccess checks from IamApi.listRoles, Ia
CVSS
4.3
Medio
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 28 ago 2026 · Última mod.: 28 ago 2026 · CWE-285 · CWE-862
Sin historial EPSS suficiente todavía.
Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits SystemPrivilege.ControlAccess checks from IamApi.listRoles, IamApi.getRole, and IamApi.listPrivileges in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java. Any authenticated account can call GET /api/roles, GET /api/roles/{name}, and GET /api/privileges to enumerate available system privileges and configured role mappings. The disclosure reveals security configuration that can support targeted privilege-escalation attempts. This issue is fixed in versions 5.12.8 and 5.13.2.
- github.comhttps://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d
- github.comhttps://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba
- github.comhttps://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8
- github.comhttps://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2
- github.comhttps://github.com/yamcs/yamcs/security/advisories/GHSA-cvw4-55pp-3hfq
- github.comhttps://github.com/yamcs/yamcs/security/advisories/GHSA-cvw4-55pp-3hfq
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———Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits authorization checks in IndexesApi.listPacketIndex, IndexesApi.listEventIndex, Cop1Api.disable, Cop1Api.resume, Cop1Api.initialize, Cop1Api.updateConfig, and TimeApi.setTime. An authenticated low-privilege user can read packet and event index metadata without ObjectPrivilegeType.ReadPacket, alter COP-1 link state without SystemPrivilege.ControlLinks, and manipulate simulation time. These operations can disclose telemetry metadata, disrupt telecommand handling, and affect system integrity and availability. This issue is fixed in versions 5.12.8 and 5.13.2.8h