CVE-2026-44596
Yamcs: No Rate Limiting on Authentication Endpoint
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Yamcs is a mission control framework. Prior to 5.12.7, the authentication endpoint POST /auth/token in yamcs-core, handled by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.java, lacked any rate limiting, account lockout, or failed-attempt throttling, so an unauthenticated remote attacker could perform unlimited password-guessing attempts against any user account, significantly increasing the risk of successful brute-force attacks. This issue is fixed in versions 5.12.7 and 5.13.0.
| CWE | CWE-307 |
| Vendor | yamcs |
| Product | yamcs |
| Published | Jul 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
yamcs / yamcs
< 5.12.7
References
github.com: https://github.com/yamcs/yamcs/security/advisories/GHSA-w5r6-mcgq-7pq4 github.com: https://github.com/yamcs/yamcs/commit/309218c651680f79df11a8d0f8628f7033f98a83 github.com: https://github.com/yamcs/yamcs/commit/64392df531fbcbc65f19ee5724c4c23d289f49fc github.com: https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7 github.com: https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0