Auth bypass in Yamcs

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 omit…

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

  • Yamcs — versions < 5.12.8, >= 5.13.0, < 5.13.2

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-55548?
CVE-2026-55548 is a medium-severity vulnerability in Yamcs, classified under Improper Access Control. CVSS score: 4.3/10. Published 2026-07-16.
How severe is CVE-2026-55548?
Medium severity. CVSS v3 base score is 4.3 out of 10.