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
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
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.