Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs WebSocket subscription handlers fail to enforce the privileges required by equivalent REST endpoints. PacketsApi.subscribePackets exposes the packets WebSocket topic without ObjectPrivilegeType.ReadPacket, ProcessingApi.subscribeAlgorithmStatus exposes the algorithm-status WebSocket topic without ObjectPrivilegeType.ReadAlgorithm, and MdbOverrideApi.subscribeMdbChanges exposes the mdb-changes WebSocket topic without SystemPrivilege.GetMissionDatabase. A low-privilege authenticated user can receive telemetry packets, algorithm status, and mission database change information outside the assigned authorization scope. This issue is fixed in versions 5.12.8 and 5.13.2.
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Affected Vendors & Products
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History
Mon, 31 Aug 2026 19:30:00 +0000
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ssvc
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Fri, 28 Aug 2026 22:15:00 +0000
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Yamcs
Yamcs yamcs |
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Yamcs
Yamcs yamcs |
Fri, 28 Aug 2026 19:45:00 +0000
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| Description | Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs WebSocket subscription handlers fail to enforce the privileges required by equivalent REST endpoints. PacketsApi.subscribePackets exposes the packets WebSocket topic without ObjectPrivilegeType.ReadPacket, ProcessingApi.subscribeAlgorithmStatus exposes the algorithm-status WebSocket topic without ObjectPrivilegeType.ReadAlgorithm, and MdbOverrideApi.subscribeMdbChanges exposes the mdb-changes WebSocket topic without SystemPrivilege.GetMissionDatabase. A low-privilege authenticated user can receive telemetry packets, algorithm status, and mission database change information outside the assigned authorization scope. This issue is fixed in versions 5.12.8 and 5.13.2. | |
| Title | Yamcs: WebSocket subscription handlers omit the privilege checks their REST siblings enforce | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-28T17:09:53.114Z
Updated: 2026-08-31T18:55:41.849Z
Reserved: 2026-06-16T23:01:04.075Z
Link: CVE-2026-55545
Updated: 2026-08-31T18:55:30.245Z
Status : Received
Published: 2026-08-28T20:18:28.380
Modified: 2026-08-31T19:16:57.843
Link: CVE-2026-55545
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