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Vulnerability record · CVE-2026-44596 · published 16 July 2026

CVE-2026-44596: Spaceapplications yamcs improper restriction of authentication attempts vulnerability

Spaceapplications · Yamcs

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.

9.8 CVSS 3.1 Critical EPSS 2.1% · top 19.4% CWE-307 · Improper restriction of authentication attempts
9.8CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/yamcs/yamcs/commit/309218c651680f79df11a8d0f8628f7033f98a83 Patch
https://github.com/yamcs/yamcs/commit/64392df531fbcbc65f19ee5724c4c23d289f49fc Patch
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7 Release Notes
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0 Release Notes
https://github.com/yamcs/yamcs/security/advisories/GHSA-w5r6-mcgq-7pq4 ExploitVendor Advisory
https://github.com/yamcs/yamcs/security/advisories/GHSA-w5r6-mcgq-7pq4 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-44596), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.