CVE-2026-44596 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44596CRITICAL

Yamcs: No Rate Limiting on Authentication Endpoint

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0173   75.7     —

AFFECTED
  Product  Versions    Fixed
  yamcs    < 5.12.7 –  —

TIMELINE
  May 6   Reserved by GitHub_M
  Jul 16  EXPLOIT PUBLISHED — CVE-2026-44596 (yamcs). Public exploit reference added.
  Jul 16  Published (CNA: GitHub_M)

CWE-307 · CNA: GitHub_M · CVSS v3.1 · 5 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 6, 2026	Reserved	Reserved by GitHub_M
July 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44596 (yamcs). Public exploit reference added.
July 16, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
yamcs	yamcs	—	< 5.12.7	—

Weaknesses

CWE-307

References (5)

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 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-44596 at cve.org

Vendors: yamcs

Weaknesses: CWE-307

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44596 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.