CVE-2026-55548

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, the PacketsApi.exportPackets endpoint in yamcs-core/src/main/java/org/yamcs/http/api/PacketsApi.java failed to enforce object-level ReadPacket privileges when a request omitted specific packet names: with an empty name list the ctx.checkObjectPrivileges(ObjectPrivilegeType.ReadPacket, nameSet) call passed over an empty set, no WHERE pname IN filter was applied to the resulting SELECT * FROM tm query, and the onTuple handler streamed every retrieved packet without any per-row authorization check, so a low-privileged or zero-privilege authenticated user could dump the entire raw telemetry packet archive and bypass the role-based access control model. This issue is fixed in versions 5.12.8 and 5.13.2, which enforce per-packet ReadPacket checks in exportPackets.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/yamcs/yamcs/commit/b566beceba98cc35514b0e1519be126b8c5a0438	Patch
https://github.com/yamcs/yamcs/commit/c743cc3acf5b5c53ff5181b94eacc21340f70dd9	Patch
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8	Release Notes
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2	Release Notes
https://github.com/yamcs/yamcs/security/advisories/GHSA-8xjq-pr36-ccgf	Exploit Mitigation Vendor Advisory
https://github.com/yamcs/yamcs/security/advisories/GHSA-8xjq-pr36-ccgf	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:spaceapplications:yamcs::::::::
	cpe:2.3:a:spaceapplications:yamcs::::::::

History

No history.

Information

Published : 2026-07-16 17:16

Updated : 2026-07-20 01:29

NVD link : CVE-2026-55548

Mitre link : CVE-2026-55548

CVE.ORG link : CVE-2026-55548

JSON object : View

Products Affected

spaceapplications

yamcs

CWE

CWE-284

Improper Access Control

CWE-862

Missing Authorization

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